Starting over. Rear end advice please

[82Cecil]

Never been totally happy with my Auburn Pro Limited slip. Slip is not so limited and both tires pulling is.

I have an 82 C10 8.5 10 bolt 2"/4" drop, ladder bars and 275/50-15s M/T drag radials. The engine is a stock 6.0 swap and will only make more of a traction issue down the road. I have to deal with this now.

I probably got more than one thing to deal with getting proper traction, but getting both tires to pull at the same time is where I would like to begin.

Before I sink any more money in a locker or spool, (the Auburn will come out), I would like to get a rearend that going to be there as hp increases.

What is a 600 hp durable rear end that I don't have to be a fab expert to install? What is the hp limit for a 10 bolt?

Thanks for your help.