Hi, I actually have a old RWD corolla, but I need to find a replacement rear end because the stock one is open diff and just is not beefy enough for my plans...

Heres what I want:
good LSD (It's a drift car)
Disk brakes
power handling for at least 250HP (maybe someday )

I realize this isn't a bolt on deal... I would just go 8.8, but I'd like to keep it as light weight as possible (my car weights 2200lbs), would the 7.5 deliver or should a get a 8.8? (my stock is a 6.7)

Also I have no clue about domestic lsd's, what is the best for the track? 2 way?

Thanks,
Jeff