Out of my tax return, 600 bucks of it is mine to play with... Got a 00 F150 H.D. with the 5.4 and not sure if I want to get OBX long tube headers or a buy a programmer.... Which should I get. I already have a ported and polished aluminum intake, accel coils, and K/N cold air intake, and 2.5" true duals with thrush mufflers. Stock 3.55 gears still are living in the rear.

 

No question for me, the programmer! I love my Edge, but with your mods, you need to go with custom tunes.

 

I'd do gears. Biggest bang for the buck on any vehicle, IMO.

 

Hahaha, I was thinking of 4.10's as well! Now I'm stumped what to do for 600 bucks! Maybe a tuner and e-fans, or the headers, or 4.10's.. Hmmm.....