Thanks 03Ramit1. When I first ordered the rear from Mark Williams I sat and stared at it for hours in disbelief. It is their modular 9", 4.10 Richmond pro gear which has been lightened, lightened steel spool, 3.812 big bore center section, 40 spline superlight gun drilled axles that have been pocket milled on the flanges, billet pinion yoke.