Just finished and LT40 and it would be hard to scratch build the fuse as it is all lite ply that interlocks. You would basicly have to take the dimensions and scratch design the fuse from those dimensions. Should be doable though. If you are looking for a builders kit you might consider the Kadet MKII. Very pretty looking plane I think. I don't know how to fly yet so I don't know much about flying one or having seen one but I know it's an old school plane that is harder to build than an LT40. This is my third plane I've built though. This time I'm going to learn to fly!