Have you read the entire thread? If not, you should. It will answer all your questions. The gas engine of choice seems to be the BME44. It is light, powerful, and fits inside the cowl well. For glow, either the O.S. 160 or the Moki 1.80. I fly mines with the Magnum 180AR and it is a little on the heavy side though it has lots of power, so I am swapping it out for the Moki 1.80. Read the thread from the beginning, you will be glad you did.

Charles