Just lookinfor ideason a new stronger posi. Im pretty sure my spider gears are already starting to go(I hear some clunky sound comming from the back, but its still driving) I can dead hook it from 4000rpm so I need something that will be able to take that abuse.

 

Auburn or Eaton posi's are good. I would upgrade to some 31-spline axle. They can tolerate more abuse than stock ones. Stock axles are tough, but if you have the money 31-splines are good insurance!