Bone stock N/A: 15.9-16.5 depending on driver
Bone Stock SC: 14.8-15.5 depending on driver
L36 is the N/A motor from 97-03 GT/SE's,
L26 is N/A motor 04-current
L67 is SC from 97-03 GTP's
L32 is SC from 04- current
you can tune your car to run on regular.....but no SC motor from GM likes regular right off the bat.
97-03 GT's upper intake manifolds didnt like the Dexcool coolant...it would eat through them over time.
If you over boost them by running a smaller pulley...you will pop a piston.
other than those factors....THEY ARE VERY RELIABLE!!! and can be made into anything you want, and be reliable. did I already say reliable?
Good luck with your search!!!