I am fixing up a 65 mustang and would like to replace the trim on the side panels. The only thing, I can’t seem to find them, and haven’t seen them on other mustangs. Is this an aftermarket item someone added along the way? The black rubber pieces in the center of the chrome have shrunken over the years. I like the trim, but would like to replace if possible. Let me know if you have any idea what it is and if I can get a replacement. Thanks!