I was up there last October, and if I recall correctly, they are beginning with what is considered the largest collection of known AT-10 parts/sections, including, as I recall, a few different nose/cockpit sections, control surfaces, and a good number of other items. With the AT-10, the majority of the aircraft is wood and fabric (almost the entire fuselage, wings, and tail surfaces), which can be built new to the original drawings (as with everything that cannot be found/used). The metal portion of the fuselage, other than tail fairings, was really just the cockpit and nose section, which of course they have - and very complete/full of all of the original controls, hardware, etc. AirCorps has such a proficient way/means of going about 3D-CADing from original drawings and 3D-scanning to seemingly quite efficiently produce new and completely accurate parts. Even though a good percent of the aircraft will have to be made new, having seen what AirCorps can do, I don't see the project as really taking as much time to do as one might think, and of course the end result is going to be nothing short of the best possible (always 110%).
When I was there in October, the project had yet to begin, and with this first project report, it looks like quite a lot has already been done in a very short time.
It might seem an odd choice of project, but the project owners, as kids, grew up playing in one of the AT-10 cockpit sections, and there-forward they've always had an interest in this particular aircraft/having one fly.
A bit more here:
http://www.freemanarmyairfieldmuseum.org/at-10.htmlAirCorps also has an AT-11 in their shop to be restored for Paul Ehlen/Wings of the North, which is also believed to have been used by the WASP's during a part of its service during WWII (it too will of course be nothing short of incredible, when completed).