I thought at first that was a Byron's kit, but my Byron's didn't have flaps, and the wingspan is 80". Are you measuring the wing panels only, or the whole wingspan with fuselage? Is the fuselage, wings, and tail feathers styrofoam? The reason I ask is I have just finished my Byron's CAP-21, and I have yet to maiden her. I'm waiting until I get my feel back for the season, and for a nice warm afternoon. If yours is the Byron, I can answer most everything you can ask. I've got a converted Homelite 45cc on mine, with a 20X8 pro Zinger. I also have detailed pictures of the engine box I made. Engine, smoke system, throtle servo, and both tanks can be removed completley with only four bolts.