You said you won't be making alot of HP, Get a complete 31 spline rearend out of a truck and have Moser make a set of axles, buy their bearing and stud package (all for under $450.00) and get the posi unit rebuilt with good quality guts and you should be set. I had the same setup under my Prostreet Nova, except I used a spool in it. Busted off 2 sets of axles before going with Mosiers. Dragraced the car and did LOTS of burnouts with it. 2 years later, still no problems.