8.25 rear pros

Its a great rear with HP limitations. Much also depends on your level of traction. If your making 600 hp but not putting it down, its your tires that will suffer.
Personally I wouldnt go much over 400 with an 8.25 Also, if your going to spend that kind of money it would be much better spent to upgrade.
Its a good rear in my opinion. I have ran one behind a stout 340 and never had any problems.