I have this junk murray frame here, with stops that look almost identical to the supersport, I had an idea of cutting out a section of it's frame tube, and trimming most of it away from the stop, but leaving just enough to use a couple of stainless steel 3/32 rivets, if I were to paint it matching cool lemon yellow, it would be a nearly invisible repair, if I wanted to braze on a stop later, a little bit of tig weld would fill the rivet holes in the frame