Is it possible?

Yes. Do a search on this site. It has been discussed many times. There is or at least was a company on e-bay that sold everything you needed. Nice people. When I had a V6, I bought his complete kit and had no problems whatsoever.
 
Should no be all that difficult...most cars even if the don't come "fully loaded" from factory have all the wiring already there, so I would assume all you'll need is the grille the wiring should be hanging somewhere back the by the condenser. Last step would be a switch.
 
I recently did just the opposite swap. I installed a V6 Pony Grille/Lights in my 07 GT. Gave my GT Grille/Lights to a buddy with the V6 Pony and helped him install them in his car. He had a "take-off" GT front bumper cover to replace his V6 bumper cover, so the swap was easy. Otherwise, the factory GT grille is too big to fit the V6 bumper cover opening.

Getting the V6 setup in my GT was easier as I used thick black rubber weather seal to take up the space around the smaller V6 grille and I custom fabricated my own mounting brackets as the factory mounting tabs are in different spots for the V6 and GT.
 
I recently did just the opposite swap. I installed a V6 Pony Grille/Lights in my 07 GT. Gave my GT Grille/Lights to a buddy with the V6 Pony and helped him install them in his car. He had a "take-off" GT front bumper cover to replace his V6 bumper cover, so the swap was easy. Otherwise, the factory GT grille is too big to fit the V6 bumper cover opening.

Getting the V6 setup in my GT was easier as I used thick black rubber weather seal to take up the space around the smaller V6 grille and I custom fabricated my own mounting brackets as the factory mounting tabs are in different spots for the V6 and GT.

absolutely > UNTRUE! <

the swap takes a minimal amount of work and almost no imagination ...
 
The GT grill will fit in the V6 without changing the bumper. Look for the kit. The kit comes with everything including wiring and the switch and instructions. Some minor cutting that you will never see is required.
The wiring for GT lights is NOT already on the V6 cars.
But the kits have everything and are not hard to do. Again, you do not need to change the bumper.
 
I didn't say that my friend "needed" the GT bumper cover to make the GT grille/lights fit, I merely said that he had one available, so it made the swap easier. He bought the entire GT body kit (front and rear bumper covers, and side rocker panels) from someone who did an aftermarket body kit on their GT. Both cars were black, so it was a direct swap with no painting needed. He did not get the GT grille/foglamps in the deal, so I offered to trade grilles with him straight across.

Putting the V6 grille/lights into my GT's bumper did require fabrication. We tried to force the side mounting tabs to line up, but they kept popping out, and the top/bottom tabs don't line up at all, so I made my own brackets.

Both cars were done using Ford factory parts. Sounds like some of you are referring to aftermarket grilles that are avaiable to make the swap more easily (albeit at a higher cost).

Lastly, as my friends V6 already had the Pony Package with the foglights, we did absolutely zero wiring. The wiring for the Pony lights and my GT lights were absolutely identical, and the factory fog light switches worked perfectly in both cars after the swap.
 

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Lastly, as my friends V6 already had the Pony Package with the foglights, we did absolutely zero wiring. The wiring for the Pony lights and my GT lights were absolutely identical, and the factory fog light switches worked perfectly in both cars after the swap.

Did you notice the depth of the pony package lights compared to the gt lights? Were they deeper? I've been looking to getting a set to integrate them behind my shelby grill. The GT fogs are too deep to use.
 
Did you notice the depth of the pony package lights compared to the gt lights? Were they deeper? I've been looking to getting a set to integrate them behind my shelby grill. The GT fogs are too deep to use.

Very good point to bring up. The V6 Pony Foglights are actually deeper than the GT Foglights, so they would not fit behind the Shelby grille. I had to mount the V6 grille a little further forward than the GT grille was mounted. Not by much, mind you, but maybe about 1/4" to 1/2."
 
I am talking about a GT grill into a V6. No problem to do.

Really? I've read at other Mustang sites before doing this swap that the GT grille is slightly bigger than the V6 bumper opening and would not fit. And the mounting tabs are all completely different (see that firsthand for myself). And, putting the V6 grille in my GT left a bit of a gap on the sides and bottom corners especially, that I filled with thick black rubber weather seal, so I know that V6 opening is smaller than the GT opening.
 
Stolen from a gentleman that has made an aftermarket conversion kit. Hope he doesn't mind. :p

"The GT Grille can be fit into the V6 bumper cover. You will need to unhook the bumper cover on both sides of the grille. Remove the V6 grille, starting at the top clips and working your way down. DO NOT DAMAGE THE RETAINER TABS on the bumper cover. Install your wiring harness and plug it into the fog lights. NOW HERE IS THE MOST DIFFICULT PART OF THE WHOLE DEAL.

Remove the bottom clips on the GT Grille, they don't line up, and they don't reach back far enough to clip into the bumper cover so you don't need them. Remove them with a pair of tin snips (JUST THE BOTTOM CLIPS ONLY). Clip the drivers side Grille clips into the bumper cover. NOW HERE IS WHERE YOU NEED TO DO SOME WORK AND HAVE SOME PATIENCE...Clip the passenger side in. This will require some muscling, perhaps some assistance with a screw driver to line the slot and the grille clip. Do this carefully, but it can be done. Once both side clips are done, us a pair of pliers and position the retainer tabs on the bumper cover into position as much as possible to hold the grille in the bumper cover. Replace the bumper cover to the original position, clipping both sides back into place and replacing the retainer bolts on both sides of the grille. Then reinstall the engine compartment (fan shroud) cover with the original 6 plugs, in the top of the GT Grille and radiator cross member, these holes will line up or can be made to line up.

The final result is that the GT grille will sit slightly farther out on the bottom than the stock grille, so the bottom of the grille sits out over where the bumper cover and the grille meet. Because of the lines of the bottom of the grille, the bumper cover and the hood, it looks all pretty stock. There is a slight gap between the bottom of the grille and the top of the bumper cover, again because of the lines, it all looks stock. Unless you had your car sitting next to a GT and pointed out the difference, it is unlikely that anyone will notice.

The lights issue. You cannot just change the switch and hope everything will work. The GT and the V6 have a different wiring harness under the hood. The switch in the dash is a low power switch that seems to operate relays to power the fog lights and head lights...so you can't just tap into the switch. If you look in your owners manual you won't even find a fuse or relay for the headlights, only the fog lights and the high beams (but fog lights aren't supported in the V6 Fuse box). Because of the relay system you don't have "old school" on/off power at the head lights and the wiring there is insufficient (we think) to run both the head lights and fog lights anyway. So the best route is to wire a separate harness that isolates the Fog lights in it's own circuit. Requires no splicing and if you do it right, no one even notices it under the hood. We use a 15 amp in-line fuse to protect your electrical system. The Fog Light bulbs are a new (of course, Ford has to switch things up all the time and use different plugs to keep things interesting) Sylvania #9145 or H10, and you can get the plug with pig tails, to plug right into the fog lights from your Ford Dealer to make the Fog Light end of your harness, if you are going to build it yourself. The motorcraft part number for the plug with pig tails is 1U2Z-14S411-FA and can be obtained through your Ford Dealer.

BEWARE OF THE PARTS GUY OR AFTERMARKET GUY ARE JUST TRYING TO THROW SOMETHING TOGETHER TO GET SOME SALES AND HAVEN'T DONE THEIR HOME WORK TO MAKE IT WORK RIGHT FOR YOU. You don't need to start paying through the nose, cutting up your nice new Mustang...shop around. You can find a lot of the parts listed here and there on the Internet. Or you can get most of the stuff I talked about here from your local Ford Dealership. But that is probably the most expensive place to buy it."


Let me know if anyone needs detailed PDFs for bumper/grill removal, etc. (and remember to play nice fellas. :rlaugh: )