I have seen that Betty Jane P-51 many times up here in CT as well. The Collings Foudation flys into one of the local airports every year. I have an autographed photo of their P-51C by one of the pilots. Flying in that is on my bucket list!! It costs around $3000 for an hour of flight. It is a dual control version. Pretty rare, would definitely be worth it. Anyway, I can't wait to see this prop / motor combo fly as well. Keep us posted.
Thanx, Mark