8 89 droptop New Member Mar 7, 2004 86 0 0 Centrial California Jun 3, 2004 #1 Jun 3, 2004 #1 I just got the Gt-40 long block with the aluminum X heads how much would it cost to get a good port job, and how much power would it increase would it be worth it.
I just got the Gt-40 long block with the aluminum X heads how much would it cost to get a good port job, and how much power would it increase would it be worth it.