D&R used to build the WIDGEON between 1990 and 2006, so Rudy most likely has all the parts needed. However, the most expensive boats around are the "FREE" ones. The cost will be more than buying a complete used WIDGEON, unless you can locate used sails and spars. Rudy might have some ideas, so a call to D&R is not the worst idea (508) 644-3001 to check. For reference, used WIDGEONs are priced between $250.00 and $2000.00 (condition, model year, and owner's perceived value are the reasons for the range).
A few years ago, I fought off temptation and passed up buying a Widgeon "kit" that Rudy had for sale ($200), an owner had started to do a complete restoration and gave up after disassembling the boat......... boy do I wish I had had that $200.00 to spend!! (Rudy said all parts were there including used sails, if I remember correct?) Someone must have bought the boat since it wasn't there the next time that I visited.