Speed Pro H116CP. 1.660" CH, 5cc valve reliefs. Sit down the bore 0.027" with a stock block deck height. They are hypereutectic's and they use the ring gap that the ring manufacturer suggests to use. The skirts have a friction coating.
Looking at these pistons my only problem that I see is I am running a cam with .050 lift stock arms. Guy I was going to buy these from said I'd probably have to mock it up and possibly adjust with the head gasket running basically a stock EQ heads