Yea I have an little bet with my friend who has an '04 GT.
His mods: Cat-back, H-pipe, 3.73's, and Diablo programmer.
My mods: see profile. At 12psi we're even 1-3 then I pull him in 4th. We're gonna see what happens at the track tho! I will be running 13psi after I do the 12v fuel pump mod...