1960 c10 Rear wheel studs too short

[60 Apache Shorty]

Apologies if this has been covered before I found posts on 5x5 but nothing on 6x5.5 lug pattern

I bought a set of aluminum aftermarket wheels and how I've run in to a problem. I only have about 1/4 inch of exposed threads to grab buy the lug. It looks like factory studs are 7/16-20 and have a knurl of .564. I've searched every end of the internet and I can't find a 1.75-2 stud with a .564 knurl closest I find is dorman 610-025 they are too short or Dorman 610-156 and the knurl is undersized at .557

What have the rest of you done in this situation?? Fronts i have conversion rotor's on a 78 crossmember studs on that seem to be ok.
-----in regards to this new crossmember it looks like its about 3/8 too skinny to fit on the out side of the 60 frame rails. Anyone else deal with this problem?