Rear end options for 1960

[demian5]

Hi - Im usually on the 67-72 board.

I am about to start helping a friend with a 60 c10 that is kind of half-ass done.

Its got stock 6-lug front end (that we will convert to discs and lowered spindles). And 5-lug rear that has the wheels sticking out like a 70s disco van.

What year span of rear ends would bolt in? Which makes me wonder if there is going to be Frankenstein stuff for whatever rear end is in there...

I'm not even sure if its a 350 or PG trans yet so that another story (gearing). Its a V8 so probably a 350.

Thanks in advance.