Suggest you check Patrick's Antique Cars & Trucks in Arizona, www.patricksantiquecars.com. Amoung other things they sell a ring & pinion gear upgrade for the TT diffs, the instructions are very detailed on how to dissassemble and reassemble a TT Rear end. I am considering the swap and they were happy to send me a copy of the instructions to review. Might help if you proceed with this - Bug


1951 Chevrolet 3100 AD Pickup