SPEC's Stage 3+ clutch kit for the 2004 Pontiac GTO with a 5.7L LS1 is a high-capacity single-assembly clutch specified with a 24x1 spline. The kit is intended for heavier-duty clutch demands and is offered as a direct-fit upgrade for that model year and engine, providing a more aggressive engagement profile than stock within the supported application.
Spec 2004 Pontiac GTO 5.7L LS1 Stage 3+ Clutch Kit w/ 24x1 Spline