but i am surprised that that y'all say the GTP will run with the LS1 with the right mods, makes me ready to finish fixing mine since i haven't even drove it yet.
low 13's are possible on a pretty stout m90 build, you'll be about maxed out of what you can do. if you're gunning for LS1's then a turbo setup will get you there easier.
or you can be zzp and go twin turbo and not give an LS1 a chance lol
99 GT - top swapped, S2X cam. - sadly, sold
96 Firebird Formula - T-tops and exhaust leak. 14.26 @ 97.8 - sold
2008 Chevrolet Cobalt SS - stock, in all of it's turbocharged awesomeness