I've acquired a '68 CHEVY C-20 step-side, with a 250 I-6, and an SM465 iron top. It's in need of E-Brake parts within the 3/4 ton brake hubs (full float axles)....which is when I started trying to find info from CHEVY about this rear end. It has a removable cover at the rear, and also a removable third member with a bolt-in pinion, ala FORD! WTH? My (shady) neighbor called it an EATON, but I haven't been able to find info or parts lists on the web, or GM. If anyone can help with info, or steer me to a website, my last two brain cells thank you.....they're really tired !