i am still putting my truck back together from last weekends mud run. i found a knuckle for nothing, but the axles are killing me. a local shop had some 10 bolts laying around and they told me i could grab the axle i needed. the first one had no hubs or rotors, so i went for it first. turned out they were thicker for a 3/4 ton 10 bolt. next i went for the 1/2 ton 10 bolt, wrong spline count! it was 30 instead of 28. i will go back monday and try again. i have a set of spares coming from a fellow ck5er, but i was hoping to get her going this weekend. WHEN DID THE SPLINE COUNT CHANGE? thanx, MTPockets.