I'm going to have $3,000 to spend soon...

If your radiator isnt broken then dont get a new one. Get a set of heads, Cam and intake it will give you a good gain
. Edelbrock performers- $1100 (you can get them cheapers from summit if they have a discount code)
Comp cam- $250
Edelbrock intake- roughly $500
Roller rockers- $200
Then you need gaskets and all kinds of little stuff. A set of injectors and a MAF would be good also but you can run the stock injectors for a while if you have too. Also Drag radials are a really good mod.

if the rear end needs a rebuild, by all means do that. Its always a good idea to do the suspension, and get that over with. Have the car handling better then new, makes driving fun.

Ide lay off the radiator unless your stock one is bad, and also the Tweecer.
I would spend the money on a set of heads and an intake, if you want to make the car faster. Heads and intake are the most resrictive parts on the 5.0's, so replace them first, to make a diference.

If money allows go for everything mentioned

By the way, the Performers are only $995 new at www.poweredbyford.com
Cobra intake is only 500, and already has the $85 elbow built in.(saves $85)

I ran this combo for a while and had good luck.
Stock short block, TW Heads w/ 1.72 rockers, GT-40 intake with port matched lower, 70mm TB, 75mmMAF w/CAI, headers, x-pipe, cat-back, 3.73 gears and a set of slicks.
Stock fuel w/regulator
Stock radiator

The trick to making the cooling system work is to stay away from pulleys. With pulleys the water pump and alt. slow down. This drops the voltage at idle and in turn slows the cooling fan. I live in the Desert where it is HOOOOOTTTTT in the summer. I still have the stock cooling system with a 180 thermostat.

I ran 13.5s all day long with this combo. I used to bracket race in the summer and I had access to a weather station every run. It was not unusuall to see the corrected elevation above 7000 feet in the summer at night races. I never ran less than 102mph in the bad air and the best I ran was 105.

If you wanna go noticeably faster, get heads, cam, and intake. The stall would help too. As a matter of fact I still have the Level 10 valvebody with shift kit from my last AODE Its still in perfect condition. I'll sell it to you for $150 if you want it. Let me know.

My Performers are coming from Powered by Ford. They have been on a national back-order since the middle of January and the guys at Powered by Ford said I would have mine sometime between the end of February and the middle of March. If your a waiting kind of guy, then that's great, but if your not - call Scummit. They are great guys to deal with over at PBF, they gave me free shipping on the Performers because they thought that they have a few more sets laying around to ship me. They ended up not having them, and because of the wait, I'm getting free shipping out of it. $995 in and out, can't beat it.

Joe