A recommended upgrade for C6 applications behind engines producing between 500 and 1000 foot pounds of torque. Manufactured from proprietary steel billet material, the redesigned profile includes a torsional center, vastly improving power transmission. Oversize spline diameter introduces a light press fit into the clutch housing increasing spline engagement and reducing spline interface failures. Press fit permits effectively creates a 1 piece assembly, permitting quick and easy end play checks, a feature not found elsewhere.Fully machined, splined, and ground on precision CNC equiptment. Fits all 1972 and up models with 31 spline converter and 30 spline forward clutch housing.