i got a 2003 mustang
GT conv. about 34,000 miles, great condition , not a huge racer, there are tons of mustangs around my area (jacksonville, NC) so when i pull up to the light next to some cocky Marine with a mustang, i like to beat them naturally. I went to the track and ran approx. 14.4, (auto trans) that's w/ spare tire, speaker box w/ amp in the trunk. I added the SLP Loudmouth exhaust, BBK shorty Headers, 75mm Throttle Body, Throttle Body spacer, 80mm MAF Sensor, and a set of underdrive pulley's, any guesses on how much horsepower i gained, and time i cut off in the Quarter??