If you guys are still looking for engines for this plane I would suggest getting one of the RCGF's. I would recommend the 45, 50, or the 65cc engine, depending on what type of flying you will be doing. They are really good engines and are really reliable... I own one of the 65cc versions, Mine is the old version and it still runs great... New out of the box it spun a 22x10 zoar prop 6900 rpm's, Now it spins a 22x10 to 7300 rpm's. I have a 24x8 prop on there now for better prop wash, and it spins that 6700rpms. Was getting more but I sucked a spring up into my engine and had to change out the piston. I had very bad strait in crash and the engine is still going... I have some video of the engine on a Yak-54, 24x8prop. Its made Just like the Nitro Planes yak-54's but with a different covering Scheme.

This is the website of the US distributor... Very good costumer service, Henry is a nice guy and has helped me out a few times.
http://www.zrcgf.com/

Here is the video of the 65cc in action on my Yak-54.
http://www.youtube.com/watch?v=j2d7N6Wvy5A

If you would like to see are hear more costumer reviews join in on the forum...
http://www.rcuniverse.com/forum/m_78...tm.htm#7823494

Update, RCGF will soon be selling the new Rear carb 62cc engine... 35+lbs of thrust!!!