PSI Conversion Vortec Engine Controller Kit (1999-2003 GM 4.8L, 5.3L, 5.7L, 6.0L & 6.2L V8 w/ 4L60E & 4L80E) : COLORADOSPEED - LATE MODEL DOMESTIC (AMERICAN MUSCLE) | IMPORT (EUROPEAN | SPORT COMPACT) AUTOMOTIVE PERFORMANCE PARTS