I run them in 2 of my vehicles, with no problems. They are both fullsizes, ARB in one and a Detroit in the other, 48" tires too. My Chev has the caps fully TIG welded to the ears, using Longfield Joints. I broke 3 Warn Premium hubs, and the shafts are fine. I think it cost about $400 for all 4 shafts and (stock)axle joints from Randys Ring and Pinion. When I break one, Spicers will be going back in too. I put 35 spline outers in my Ford about 8 years ago when the 35 spline stubs cost $35 each. Back when a Dana 44 front in a Jeep was a heavy duty upgrade.