Need rear differential advice

[Goats86]

I have searched this board for the last 3 days looking for an answer. No luck. So I thought I would ask for some feedback. I want to swap a different rear end under my 1986 c10. I would like 3:42 gears(approximately), limited slip, and disc brakes. Here's the question. Is there a particular unit that would swap almost straight into my frame? Same width, I could move any spring mounts etc. ie Camaro, Impala, 2000 c1500, etc. 10 bolt or 12 bolt????