I found the numbers on those rears the guy had 2 of the same ones and one isn't seized but had some water the other one didn't have the axle shafts and was in a position where there wouldn't be water and I was wondering if anyone could identify these

https://imgur.com/a/bTEcJPw


I also found a front end here are the numbers 10-18-57


1967 Chevy c50 327 w/ sm465 5000Ib front 15k 2 speed rear w/ 22k springs, single axle, hydraulic brakes