[eliteJAE]

a 300rwhp N/A car is possible, but you'll need every major bolt-on made for our pi 4.6's and a good tune. Looking around, you could find all the parts needed used and stay under 4k, but this is all dependent on the fact that you're doing your own work. labor costs for everything will make the prices skyrocket

[SteviGX]

http://www.moddedmustangs.com/forums...ustang-gt.html do the engine mod's and you'll have more than 300.

[1StockGT]

I also say save your money and throw a s/c at it. If you really just want to be 300rwhp N/A it will take a full exhaust Lt headers to catback, intake, plenum and t/b, a set of cams and a good tune. That will put you right at 300rwhp. Heads will give you a little bit more, but I'd wait for the new trick flow heads also.

[SteviGX]

I agree ^, unless your dead set on N/A a supercharger is going to give you alot more bang for the buck as far as powerwise. 4K n/a 310ish hp. 4K Supercharger 380-400 with supporting mods. It's all up to what your plans are..if you want a nasty n/a car like ac's or you want some extreme supercharged car like jivepepper

[drazga97]

wait for the trick flow heads and do a cam of your choice as well. then tuner and whatever else you want.

[RALVAREZ26]

for 4k or less you definitely can get to 300+ rwhp N/A!
this car makes 320rwhp n/a

my cammed mustang