Yeah those diffs go quickly if your really giving it on the corners (although they are not really strong to start with), but I agree with adz06 that you should probably get the H/Duty ones. The amount of standards you will go through outweigh the cost of the H/Duty set. But if you cant as mt2nitronut just said, shim them...but dont OVER shim them as you will blow them again and really give them a good lube, or better yet change the diff lube to 1/4th car engine oil in your diffs to keep them lubed and create less friction...? Just a thought but you can experiment though.