Yeah those StevensAero designs have a lot of appeal. I don't doubt it could be done... Too bad there isn't a profile view in the instructions. I remember looking over the pdf of the manual with the same idea of converting it for my Saito 40 but decided the price of the kit was too high given the changes I would have made like moving the firewall back, maybe adding ailerons etc. The 10oz recommended battery appears to be behind the center of gravity, and in your case the receiver battery will be a fraction of that so balancing it could get interesting having doubled the weight of the powerplant if you use a 52.