I ordered paint masks for the PIPER Logo and N numbers from AeroGraphics located in Loveland CO. They do full scale work but can resize the logos for model use. Highly recommended if you looking for scale logos. Also ordered an exterior kit for the other small details. I used their logos on the 1/4 scale and 30% Cherokees, Champ and now the Super Cub.
I think I'll go to Lowes today and pickup a 4'x8'x2" sheet of foam and get back on the Cherokee plug.