Thanks. I tried panel nuts and found the 1/2 x 28 x 3/16" nuts. But I need 1/2 by 20. So still doesn't work. Also, the last time I went to junk yards out here (4-5 years ago) they didn't have any cars from the 60's and 70's. There weren't as nearly many of those cars out here and people are now holding on to them.