Quote Originally Posted by s6dark6angel6s View Post
may I change to a 3.4 or 3.5 pulley?

I read at zzperformance that a 3.25 pulley its good for a stock or sligthly modded GTP

and how i fix the knocking to be usefull the 3.25 pulley
you must of misread cause thats def wrong 3.5 is for slightly modded cars