The moonbat is quite the interesting WW2 Prototype Aircraft from McDonnell, the only functional prototype was lost in a fire during testing in 1944 and the project was canceled later that year. The Aircraft was distinguished by its large blends from the wing to the Nacelles & Fuselage.

This aircraft was influential for my Sr Design project at ERAU that had a 2 seat general aviation aircraft with large fairing between the wing and fuselage.

Outerzone does have a 1/10 scale RC model for the scratch builders out there.

https://outerzone.co.uk/plan_details.asp?ID=6742

Grabcad also has a stl model that could be helpful for anyone wanting to 3D print one

https://grabcad.com/library/mcdonnell-xp-67-scale-model-1