Saw your request, I went thru the same struggle trying to find appropiate wheel studs for my dana 60 in 1972 c20 truck. Check this site as there are visual wheel stud lengths, sizes, knurls . I used 610-189, they are 9/16 x 18tpi x .622" knurl and are 3" long, because I wanted to use the newer style gm aluminum wheel 8 bolt. The longer stud had to be used so I could put a wheel spacer behind wheel so that the cap would fit on top. The drum had to be drill as well; because of the longer knurl. Hope this site info will help Cheers
http://www.billavista.com/atv/PDF_In...%20Catalog.pdf