Here is Chris' reply to my inquiry:
Hi Dave,
It's actually a Sterling 36" P-38 Stunter wing and horizontal, the one that is .09 to .15 sized. I traced the booms, pod and verticals from the Fighter Airplanes of WWII book. It's the one that's from the series that has beautiful Watanabe airbrush art work. (I'm on a trip and I can send you the author and exact title later, if you want.)
The reason I went this route is that the elevation at Tucson (2700 feet) with an 11 year old builder/pilot on the original Norvel .049's needed additional square area than the scale wing and tail shapes and sizes.
He changed engines to the Wasp .061's this year, and that really changed the model's handling from marginal to reliable. The five practice flights on Saturday and one official flight on Sunday were his only C/L flights of the year! I believe one could build a completely scale P-38 with the .061's and have a good flying model. Not as good as the stunt wing, but good enough for Scale events.
I think the Sterling P-38 wing is a great flyer and really has good high lift performance, but an accurate shape for the wing and tail for a Scale model can fly well if the airfoil is sufficiently thick. I would go with a scale airfoil and cheat it about a 1/16th thicker at the root and a little thicker towards the tips, like about 3/32nd's because of it's super narrow wingtips.
I never drew plans but I have the tracings I think.