Where to find window trim retainers for 52 Hornet

If you are talking about the ones that hold the corner pieces on,you can make these. I have found it is next to impossible to find them in good,usable condition.They have to be good enough to the hold molding tight as you push it down to secure it. Take a few pieces of the good wide side trim molding retainer,cut it to lenght and then cut it at an angle,piece it together at the proper angle,weld the 2 pieces to obtain the top retainer clip and the same for the bottom. It sounds like alot,but it doesn't take very long and is well worth the time/effort making them.CG