Jun 11, 2012 #21 C Clark6 Well-Known Member Joined Apr 15, 2006 Messages 1,197 I have the updated or last style GN1 Aluminum heads,, I had to do NO modifications, just bolt on, maybe bend the two piece clamp bolts maybe, that was it.
I have the updated or last style GN1 Aluminum heads,, I had to do NO modifications, just bolt on, maybe bend the two piece clamp bolts maybe, that was it.