RED FLAG!!!
KB hyper-eutectic pistons are a very poor choice. The top ring must be gapped to the point of rediculousness (around .032" in this application). Speed Pro offers a much better h-e piston without the design flaw of the KB, and for less money. H616P is the part number.
Failure to follow the ring gapping instructions WILL result in catestrophic engine failure, in the form of popping the top off the piston at speed. This is not a "maybe".
Highly recommend you change the cam while you're in there! No need to do anything to the heads but make sure the valve job is fresh and the springs are good.
Jim
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