I am finally getting around to the body work, found a lot more rust than I anticipated covered by some of the worst body work I have ever seen. Try a thin piece of galvanized sheet metal pop riveted on over a 6 inch hole in the bottom of the front fender covered by about a quarter inch of bondo. I have found a source for  most of the plastic trim clips, some are for other GM products which I have successfully modified to work. The ones I am having trouble with are the metal clips for the rocker moldings. The clips on the right side are in pretty bad shape and the ones on the left side are gone completely. The genius that did the gruesome body work just put a long hanger at the top molding line that the molding hooks on to and screwed the ends down to put pressure on the hanger to keep it from popping off. I have been periodically doing google searches for molding clips and I have found most, either from aftermarket manufacturers primarily AMK or on ebay. Thus far I have not been able to locate the rocker clips. If anyone knows of a source I would appreciate a heads up.

Refresh my memory Old Guy, is this for your '63 Catalina or something else?

https://www.opgi.com/catalina/1963/

JUSTA6,

Went to OPG typed in rocker molding clips and THERE THEY ARE. Thanks so much

JUSTA is our hero. Thank Bro! 

They had my clips when I needed them.  Glad they had yours too.