Keith Black hyperutectic standard bore 302 CH (1.608”), dished pistons on 351W connecting rods (5.956”). I’m not sure how many -cc’s. Pistons were balanced before the connecting rods were pressed on.
Pistons could be pressed off for use in a turbocharged or supercharged 302 cubic inch combination.
Were ran for a brief time in a 351W with a 3.85” crankshaft making a 393 CI stroker.