My wife's uncle has a 73 Mach 1fastback he said he will sell us for $300. It has no interior, engine, or trans. The body is solid with no rust. I am planning on swapping the 03 from 2v to 4v next year anyways, so is it possible to put the 2v in the 73? He has 351 he will give us with the car it needs a rebuild.