Donno about your high pinion, but chevy apparently had two part numbers for lug studs, the ones I needed have a .650 diameter knurl, they are Dorman p/n 610-283. There is also a lug stud with a bigger knurl, like .670 or something. I don't know the p/n for that one, but it's on the pirate site in the D60 bible. That's where I got the first one from. It's in the section where they talk about converting drw hubs to srw hubs. My dodge d60 uses the .650 diameter studs, but 1/2" threads. I ordered new chevy ones, 9/16-18 thread, from rockauto yesterday, 1.80 or so each. Hope they fit right.