I'm new here having just entered the MB genre by motorizing my recumbent. I purchased the bare bones kit from GEBE, and picked up a 43cc Mitsu clone on ebay for a song. Works great. Engine mounted low makes it handle very well. As you can see, I tow a trailer so the assist is a real knee saver on hills. (My 53 yo knees ain't what they used ta be!) Gotta run in stealth mode tho here where I live. Notice the blackout effect. Hmmm...might get some of that radar absorbent paint...Gotta be careful - cops will bust you here for just lookin funny.