This is out of 68 el caminos, non posi, think gears are 2.75ish. Pretty clean, has good pads, drums, cable are still on it though dont know of their functionality, brake lines appear to be good. This is a Chevy clip style rear housing, Asking 250.00 obo. Shipping would be on you Located in shelby ohio I got this on a large group purchase, so I dont know anything about it, but it turns smoothly, backlash feels good, there is a good chance it could be installed and run as is. I have never had the cover off