If you can find a damaged frame, you can cut off part of the dropout above the hole and have it TIG welded back on. I did that to my 1987 Cannondale after crashing in a race. Made a straight cut further up where there's more metal, got another dropout and made a matching cut. Beveled the edges, ran a TIG bead all around, ground it down a bit, rattle can paint .... off to the races ... still going strong.