Erick,

YS 45 YS 45 YS 45!!! I dont suggest you use any other engine, I have seen it fly with a 61 and it did not perform near as good. First, the tanks are up just infront of the mains, you need a pumped engine (YS is pumped) or a regulating pump to get the fuel to the engine, plust the .61 is too heavy and lots of lead is needed in the nose to balance. Then there is the prop issue, need to big a prop with a 61, cant rotate! Landings are very slow, no flaps or flaperons. Build as per manual, no need for any mods.

I agree with steve,
dont waste your time with this plane as a DF, if you want to go that route this is not the bird for you. Now as for turbine ....This would be one hot little ticket with a SimJet 700 in the tail cone!!!
Todd