This is an idea I've been kicking around a while, and this seems a good opportunity to take a shot at it. The original P-6 resembled the eventual P-6E only in the way all Curtiss Hawk biplane fighters had major components in common. Everything from the original P-1 pursuit to the final Hawk III export fighter shared a common basic structure. A variety of engines, both vee and radial were employed. The basic girder structure of the fuselage did not change as it was variously fleshed out with stringers. Undercarriage arrangements varied, little variations in the tail assembly were rung. The wing structure remained the same (with the disastrous exception of the 'metallized' BF2C) throughout..
Here's a couple of pictures of the original P-6:
The P-6D was basically this machine, fitted with an early turbo-charger:
So, I'll be starting out with this:
I will need to scratch a fuselage, and details, but wings and tail will certainly be from the kit....