Well people talking about the 4 speed and weight made me reevaluate the rear end. I don't have anything against running a Dana 60 so might as well and play it safe. As for the W9s I figured those are the cream of the crop for W series heads so having those with the small chamber and a flat top piston vs. an open chamber w2 with domed pistons would help me get both the 12.5:1 or 13:1 I want and would greatly reduce piston weight which meant better for the 7,000 rpm. :thumbsup:
