I have a brand new set of JE 18* Dome pistons for a 421 SBC (could be used for big valve 23* heads too). They are a 4.155 Bore, 1.087 compression height, .927 pin, and take 1/16 1/16 3/16 ring package. These are pistons only so no pins, locks, or rings and still need pin fit. $350 shipped.
402-616-7643 Nick
402-616-7643 Nick