Not to be a negative nellie, but there is no way just an x-pipe back is going to give 35 hp. Lucky if you see 12 to 15. Heck on a stock GT with a full exhaust, headers all the way back 35 hp, is really pushing it in my humble opinion. Only way to tell is take it to the track before the upgrade and then after. If you've got more mph after then you got more hp out of it, just use the calculator then.
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'00 GT
5-spd
Vortech S-Trim
3.1" Pulley
Paxton Air-to-Air Aftercooler
90 mm MAS
42 lb injectors
Cobra Fuel Pump
70 mm AccuFab Throttlebody
C & L Intake Plenum
2 1/2" X-pipes
Anderson PowerPipe
MagnaFlow Mufflers
Diablo Custom Chip
3.73's
Steeda Lower Control Arms
358 rwhp (Mustang Dyno)
New Track Times Coming Soon
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