Junk Man,
The originals had 90 inch wheel bases. Some replicas had 92 or 94 inch wheel bases. The perky butt referred to was on early Factory fives, the rear end kind of stuck up instead of being flat and in line with the rest of the car like all of the rest. As for the doors and hoods, no not all of them will fit other bodies. It looks as if you have a good buy there and it should make a great car.
The parking brake handle is on top of the transmission tunnel and I am guessing what looks like a hole to the drivers side of it is where the shifter lever comes up. That is kind of unusual and should help some of the really knowledgeable people identify your car.
Ron