Thanks Ray, Gary and Tom!
I got the props made and installed. They were very straightforward. I put a little helical twist in them and there is even a shot proving the Allison runs...
Start-up G-CIIO Curtiss P-40C Warhawk - YouTube
Skip to 0:25. I don't think this is the exact mark, but I do think the engine is pretty close and it's (I think) a P-40C. This guy needs wheel chocks, though...
Some tiny bits and bobs and then it's on to the gun site and the dreaded canopy! Isaac...where are you?
Wish me luck...Dan