That is kinda what I was thinking.... Accually the Great Planes Electric Yak 54 would be a perfect choice... I was looking at the local hobby shop today, and without the engine block mount in front the tower engine mount and my motor would be a perfect fit.
Here is the link to that plane... what do you thnk???
http://www3.towerhobbies.com/cgi-bin...?&I=LXMUW7&P=0
Accually this motor mount may be a better option.
http://www3.towerhobbies.com/cgi-bin...?&I=LXLCL3&P=V