Cheap tubular control arms for replacements?

Let me explain I have a 1968 ply val it had 9"drum on ft / I changed it over to disc bought everything except upper arms only to find out the spindel takes a bigger ball joint so now I'm stuck cause the new joints are to big for my control arm need help any ideas? Can I shim the shaft ? Can't find a ball joint I think the donor car may have been a 73 duster anyway I need so help to get this fixed ( help me ray )
If your interested, I have a set from a 71 Scamp, New PST polygraphite bushing (installed) and new ball joints (installed). I put these on my car and drove it maybe a couple hundred miles before I parted that car out. They have just been sitting around since then. I could let you have them for $125 to your door. These are clean, rustfree colorado parts.

Nevermind, looks like you figured it out.