DIAMOND Racing STREET/STRIP DISH Pistons [Bore 4.000 | Stroke 4.000 | Rod 6.125 | C.D. 1.115 | Weight 407 | Pin .927 x 2.500 | CC's -15.0 | 62cc 10.5 | 66cc 10.1 | 70cc 9.7] (GM 6.0L LQ4 & LQ9) : COLORADOSPEED - LATE MODEL DOMESTIC (AMERICAN MUSCLE) | IMPORT (EUROPEAN | SPORT COMPACT) AUTOMOTIVE PERFORMANCE PARTS