The ONLY General Misunderstanding I ever had the misfortune of owning was a 1960 2-door Biscayne, and that was because I could find NO Fords available used.
1970, Groton, Connecticut, Sub School.....
235 PowerGlide.
The rear footwells were GONE, as in open rectangles (Fred Flintstone).
The main floor was rotted so bad the seat had noting to attach to (hit the gas, pin your knees under the wheel, hit the brakes, you and the seat were up against the steering wheel).
Bought a sheet of 3/4 ply, cut it to fit both sides of the hump, laid it down.
Bought a bunch of carriage bolts, laid scraps under the remains of the floor tin, bolted it together, then bolted the seat to that.
Bought a bottle of white Pactra paint and a small brush, this was when the Plymouth Dusters were first out, hand-painted "Ruster" on both wings and the rear deck above the bumper.
And, I will never own another GM.....