witestang

I have a 03 automatic gt. I have off-road x-pipe, magnaflow mufflers, underdrive pulley's, k+n filter, accufab throttle body, and plenum, sct custom tune, and 3:73 gears. I'm wondering what to do next? I have thought about, long-tube headers, a torque convertor, or a cam. I just am not sure which is the best next step. Or is there something else i should do first? It's also a daily driver that doesn't go to the track, but once in a blue moon. So i don't really won't to put nitto's on it or anything like that. I just want a little more power.

ASUSMC

Long tubes are always a good choice. They are more efficient so IF you keep your foot out of it most of the time overall your car should run better. BIG IF

06mustang88

it's time to do either or both of 2 things

one: supension
since you don't go to the track, lower control arms and a panhard bar
subframe connectors
lowering springs and struts

two: beef up that auto (trust me you'll love it afterwards)
torque converter
shift kit
trans cooler (definitely get this, your tranny will appriciate it)(the bigger the better)