LongBox55 - Thanks so much for your help. I think you went above and beyond to show me where to look! I really appreciate it.

So here is what I've found. The "55.1" rear end has the stamp NK 1221 and the "57" rear end has AF 806

I hope that can allow you to tell me what I've got. Again I really appreciate your help!

How did guys ever build hot rods or old cars/trucks before the internet?


'53 Chevy Pickup, 235ci, 4 spd Saginaw, Fenton Headers, 2x1 Offy Intake, Monoleafs dropped front springs, 15" rally wheels