Quote Originally Posted by TheAce144 View Post
All I know is that the 97-03 GTP running on a 3.4" pulley has the same amount of boost as the 04-07 GTP with a stock pulley, which is 3.8"...maybe around 8-9 lbs?
fixed it for ya

and no, they produce just about the same boost on the stock pulley.

putting a 3.4 on the gen 3 without anything else(supporting mods) would make it produce prolly up to 10-13psi over the stock psi of 5-7. The smaller pulley makes the SC spin way faster than before, so it makes more boost.