Peter,

If you go with either of those two engines, don't get the "CL" model. That stands for Control Line and do not have any throttle control.

I have pretty much decided on Saito 40a's for my DC-3. I have a larger Saito and love the way it behaves. I understand these may be "too big" for this kit, but the Top Flight design article said they work fine. The article actually says that four-stroke 26's would be the smallest to fly this plane, so the 30's should also be great. However, I'm planning on leaving myself some cushion for power and when it is time to fly "scale" just not jamb the stick to full...

Lastly, in case of future kit disassembly - I think the Saito 40's will go into some other planes better than the little 30's.

Pilot Junky - I got my dummy radial engines from Dare Hobby. I'm also planning to use their bomber crew for the pilots because they seem to be the correct size/scale.

edited for typos.