Quote Originally Posted by 04CompG View Post
So we do not need to worry about upgrading the rockers and springs if we are only going to drop a pulley size correct? Like going from a 3.8 to a 3.5 on the Gen5 M90??
Well let me rephrase that. As long as you have other mods to support the pulley drop and you arent changing out the rockers then, no you would not need to change out the springs or lifters or anything.