Originally Posted by J Wikoff
If it really gains 15% top end power, who wouldn't do it for that much $? I think na95sta had one.
na95sta had a previous generation HVII
you wont notice much difference on a relatively stock motor, but with high ratio rockers or a cam youll definately have an improvement, otherwise the loss in low end torque will negate the small affect on top end power
and no, your not removing the runners, this replaces the runners and makes it more balanced to each cylinder
and yes, MOST grand prix engine parts will interchange