I've often dreamed of fitting the 4*60 wing to an LT-40 fuselage. The cord is close enough to fit in the stock wing saddle without much modification. The saddle would have to be sanded slightly to accommodate the semi-symmetrical airfoil of the 4*60. An experienced builder could make the mods to the fuse in about an hour.

I'd also like to move the vertical stabilizer back so that the rudder hinge line is even with the hinge line of horizontal stab. Then you could split the elevator and run the rudder all the way through to the bottom of the fuselage.

Thought about the same mods to the Kadet Senior fuse and 4*120 wing. Same tail mods too. Having some rudder below the horizontal stab would make a huge difference in how the plane flies.

I think either would be a darn nice sport plane. Just haven't found the time to do it.