I’m the guy with all the DSS fit troubles. Once they got the machining right we were good to go...... but to be fair, the problem was with the stub axle not the half shafts, and the extra expense involves the stub axles as well. My biggest fear was snapping a stub axle at pace..... after I had completed the swap, the stock half shafts were still in good shape. Other than changing out some hardware, the half shafts fit fine and I run them very hard on track with and LS1. Hope that helps. Jim.