3/8" 24 square weldnuts

[chevyrestoguy]

I couldn't find any with enough movement to adjust the doors. If you scroll down to post #117 and you can see what I did. You do have to hold them from behind but once they're in they work fine

Yeah, Kim, I learned that one the hard way, too. I had bought some really nice 3/8-24 nutplates from McMaster Carr and used countersunk rivets and once I re-hung the doors, I couldn't get them to move out far enough to get the doorskin flush to the fender and cab. I had never realized just how much those factory cage-nuts move inboard and outboard.