The XP-56 was one of three unusual WWII prototypes, the other being the XP-54 and 55.
I have built a XP-54 and it is a good flier. The XP-56 uses a 1/4A  (.020) size motor as far as power comparisons go, but has a 7x3.5 prop, an unlikely choice for a .02 PeeWee.
Battery is a 2 cell. Span is 20 inches. Hopfully it will fly this weekend

That is a very interesting bellcrank linkage.  It must have taken a lot of time to work that out.  Great job.  Good luck with the maiden flight.

Paul

Well even with the messy bottom pointed out by Doc, it flies very well. Not a stunter but nice touch and goes. Balance was right on. I need to adjust for more up than down. The small elevators out of the prop blast are ineffective until the take off roll is at high speed. Also it needs a bit of down thrust(I think) since it flies a bit nose high. All in all I a very happy. A bigger one would make an interesting fun or profile scale model.

The Northrup XP-56 was called the Black Bullet.