Mirror Mount Covers
 

So I have a 1997 Chevy k1500. I recently purchased some older K-series tow mirrors from a guy with a dully 4door version of my truck. With those mirrors they mount on the door itself with screws. My issue is that I cannot figure out where to find covers for the old mirror mounts. I've typed almost everything i can think of into google to find them but all i can find is newer style tow mirrors. And since not very many people go backwards in years with their upgrades i haven't been able to find anything on youtube that could help me either. So if someone know what those covers are called or has a link that i could use to find them I'd greatly appreciate it.