Sorry I'm late to the party guys...
You're all either close, or kinda right on the I.D. This is indeed a heavily modified Fairchild PT frame, converted to a cropduster after the war, not by Weatherly, but by Funk. The wings as well as the horiz. and vert. stabs are of metal construction, and the wings are not tapered like the wood Fairchild PT wings. It is a new build high lift wing, designed for the new role she would play in "agricultural application". And yes, they were metalized fuselages, (at least the couple that I have owned were). There were only a few of these modified by Funk, and a few modified by Weatherly. John Weatherly went on to build many more dusters of completely new design after he experimented with a few Fairchilds.
It has since been
further modified into a "Japanese Sonjia" replica by Malcolm Laing (FW-190 owner and of Texas Air Museum fame). He put a Jacobs engine on it if my memory is correct, along with a PT-26 canopy and was going to build these for re-sale to supplement "Tora"-like acts at airshows. He bought a PT-23 frame from me, and a PT-19 frame from another fellow up here in the North Woods, but I don't know if he ever went any further than building this one example, which I believe he still owns.
I haven't talked to Malcolm in a while, but Dave M. has probably been in contact with him lately because of his FW-190, maybe he would be able to get more info on the Sonjia replicas if somebody is interested.
Hope this info helps.....
Steve
