H2 SAS

[Waters]

I have an '03 H2 with a 6" Fabtech running 40X15.50X20 and am having problems with the front diff and axles holding up. I have put 5.13 gears and e lockers front and back but my diff case keeps cracking. Has anybody done an solid axle swap on one of these? I found a kit sold by pure perfomance but it is made for GM 2500-3500. I know the front end is the same but the rear end on ours has coils/bags instead of leafs. Any suggestions?