*SOLD* Rear end, came with a 1950 Ford parts car, so I would guess that was what it was from? Not sure. Measures about 57-1/4" to wheel mounting surfaces. Missing one drum. I don't see any spring perches, guess someone removed them? No idea on ratio. The drum that is there is currently stuck but everything else seems to move (there is enough clearance on wheel studs to drum that I can tell the axle is turning a few degrees though the drum isnt. I may try and adjust the brakes off to see if I can get the drum loose. $40. Or trade for something interesting that isn't as big and in the way as this rear axle Im never going to use