I wish someone out there did build new "Classic" warbirds. It would be a dream to get a f4u-1d.
Last year I sondog and I got together with TeeeRex, Vader, maddog, and rendog in Salinas where Te and Vader live. We visited a friend of Vader who builds WWII aircraft. In the hanger at that time under construction were a P-51 and P-40. When I was there a few years ago they were working on another P-51 and a P-39. This fellow learned it all from his dad who also still builds WWII aircraft.
If you want the name of the company PM me. I will call Vader and get it for you.