Hi Hammbone,
You might also consider a 1/4 scale Ruskie Yak 11. Can be purchased here :
http://www.skygate-collection.com/cm...x.php?page=158
I had one and it was a fantastic fit for the 150 Moki. I really loved flying that engine in that plane. It was a real easy fit and at 44lbs the plane moved along with plenty to spare. A great package and much like the big Wildcat mentioned above, it's not a real common sight at the field. Mine got a lot of interest just because it was different. The plane was a very stable plane in flight and easy to fly at all speeds.
Good luck with your project. Let us know what you do.
Scott