yeah, dont worry about stock GT's of any year...it really shouldnt even be close esp. up top. buttttttt....there is a butttt...dont ever race a 03-04 Cobra/Terminator (as slvr said), simply because it wont be a race at all. ohh and same goes for the Mach 1's, those are Terminators without the supercharger

 

I've put my 05 GT manual on the dynojet, 275hp, 285 torque.

 

what are your mods?

those are darn good numbers even for a manny tranny if you tell me it's bone stock. The only caveat would be how exact was the dynojet? 275WHP would be only an 8% drivetrain loss which is awfully darn low...but good if that is what you got and you should be happy because with a CAi/tune and some udp's your GT would be right around 300WHP unless you already have some mods (including lightweight driveshaft)