What are all the early year (60s & 70s) that came with limited slip differentials? I want to put one in the tang mobile.

I'm not sure what years had them or what years will fit but I know it wasn't a common option.......they're hard to find.

Someone told me that all commercial chassis Caddys (limo and hearse) had them......don't know this to be a fact though.

That's what dave smed was telling me. They were standard in limos and hearses. He said if it has a G-1 or G-2 it was limited and if it was just the number then it was a slip.