I have used small plastic insert similar to the license plate inserts , I trimmed the square end to fit the round holes .... the hardest part is the alignment of the screws with the new inserts, it works and make for easy removal and installation. Use screws with countersunk finish washer.
74 wag, 349Kmiles on original ticker/trany, except for the rust. Will it make it to the next get together without a rebuilt? Status: needs a new body.
85 Gwag, 226 Kmiles. $250 FSJ test lab since 02, that refuses to give up but still leaks.
See Ouray 2013
, Engine bits
and Fuel and brake lines
, and Body work