I've been searching and thought I had it all figurered out. I wanted longer 9/16 studs for the swap, and to help facilitate running aluminum H2 wheels. Shakerbuilt's site says studs from a dually 14 bolt will work. So I found Dorman p/n 610-194 from www.rockauto.com listed as a 1985 rear stud for a DRW axle. I got them today; the knurled area is too small and drops sloppily into the rotors (p/n 5014, raybestos for a 76 K2500) and the shoulder or flange is far too fat. So obviously *any* dually stud won't work. Does ANYONE actually have the p/n for the proper stud for this application? thanks.