MANLEY PLATINUM SERIES Lightweight Pistons, -18cc DISH [Bore Size 4.001 | Rod Length 6.125 | Stroke 3.622 | Comp Distance 1.304 | Pin Diam .927 | 64cc 9.2 | 66cc 9.0 | 70cc 8.7 | 72cc 8.5 | Piston Wt/Gms 430] (GM LS & L92 exc/ LS7) : COLORADOSPEED - LATE MODEL DOMESTIC (AMERICAN MUSCLE) | IMPORT (EUROPEAN | SPORT COMPACT) AUTOMOTIVE PERFORMANCE PARTS