I have sold it. I have a 3.42 Eaton Posi. with 31 spline axles. I was told it came out of a 1973 454 Caprice. It has a 10 bolt cover but has 12ea 1/2 inch bolts holding ring gear to carrier. The code on the axle housing is VE P 257. I can get more measurements. Does anyone recognize this?