New 03 Gt Owner. Opinions On Upgrades

If you're asking best bang for the buck.....I say scrap all of the rest and save up for a supercharger. Bolt on mods for this car can break you quick and aren't very rewarding as far as gains go. I can tell right off the bat, you're approaching this car like you would a 5.0L Fox body....Don't! Intake and exhaust mods do very little to increase the performance of the 4.6L SOHC cars. Power adders are where it's at. It's a big initial expense, but when you add up the cost of all of the bolt on parts you've just suggested, you're over half way to blower land....except instead of picking up 20hp with bolt ons, you'll pick up 120hp with the huffer!

I've been down the 2V modular road and if I could do it all over again, I would have gone with the blower first, instead of wasting thousands of dollars on bolt ons that only looked pretty.

That's my .02