That would be a major rebuild, yes.
I really hope Trumpetboss engineers this correctly. I’ve always thought that if they give us a solid center section: wing and center fuselage unit with plug in nose and tail, if they just do a basic D and J, then the aftermarket could fill in the rest.
Different noses, tails, even engines, depending on your fancy. If approached right, this could be one seriously useable base for some crazy kitbashing.