Back in the '70s and to around 1990 there was a company out in California that produced a number of foam molded wing, molded fuselage and tail surface models.
They were in the 50" w/s sizes. I liked them for a quick machine to put together and PAINT IT WHATEVER COLOR YOU WANTED IT TO BE. There were some very good polyureathane paints back then. Government stopped all that good stuf. I flew a Spitfire for some years. There was a Piper Cub that was an excellent Trainer. It was as good as the Sig Cadet. The models were light and thus low load on the wings. .25 to .40 worked well.

They just had some problems getting Hobby Shops to stock them and thus meeting demands. Last I heard of the company, they were doing some business through some company down in, IIRC, Tuscon, AZ.