I figured Cosworth, Wiseco, or CP would make them. I also figured it'd be an arm and a leg as well so that's already been taken into consideration. As far as the stock crank, I don't think the stock crank is going to like 600+whp. I'm assuming the journals for the bearings are the same size as H4s if I am able to use the STi rods. Right or wrong?
I'll do some searching for someone who can supply valvetrain.