Exact replacements not available from Wellcraft anymore for sure. Repair is the most common fix if they are not too bad...fiberglass the backs and paint and they come out pretty good. (never thought about flipping them but thats a good idea too!)....Other option is Ebay and other marine stores and find a set as close the hole opening as possible plus a little bit and enlarge your openings to fit. They can be found pretty inexpensive sometimes.
Welcome to the site by the way