heh, and the pictures saved me. no posi but 4.11 gears Richmond Pinion No. 80-8053-1 Spec is as follows Ring and Pinion Ratio: 4.11:1 Cover Bolts: 10 Ring Gear Bolts: 10 Pinion Spline Count: 25 Carrier Series: 3 Ring Gear Rotation: Standard Ring Gear Teeth: 37 Pinion Gear Teeth: 9 Ring Gear Diameter (in): 8.200 in. Pinion Shaft Diameter (in): 1.438 in Fits GM 8.2 10 Bolt Axle well, that's not right.... this is a 8.2 not a BOP 8.5... dang but at least 4.11... though with that said, this is a temporary axle now someone has been in there, but why would you rebuild a peg-legger? bench of parts to install the steering box was where I left it, sitting above the installed one.... spent some time trying to find it... hidding in plain sight.