When I was in my late teens, I would by all the cox's I came accross for 50 cents a peace. Mostly from kids younger than me. You just would not believe the variations in the Babe Bee series alone as to port design etc.

I never knew which was which because all I ever saw was just the engine or maybe a ragged part of a fuselage attached to it.

I would mix and match them and put them on simple free flights that often flew away even with just an eye dropper tank.

Enjoy,

Jim