FWIW, ALL Centerforce 18 spline clutches are on back order and have been for along time. You might get lucky and find one on the shelf but I have been told they are no longer going to make the 18 spline hub.
Brewers Performance Inc. 4-speed transmission and parts specialists PH 937-947-4416 or 937-698-4259 FAX 937-947-4419 www.brewersperformance.com
