All doors of that series should fit. Those with upholstered panels have holes for mounting.
When looking for a driver side door, check to see the condition of the inner hinge mounting.
Never needed one, but it seems to me an adjustable upper link from a tractor type, 3 pt. hitch could be used with appropriate end pieces to push the spring eye, maybe ??
The original motor in a '54 would have been a 239 or 256, not a 292. '54 was a first year "Y", and many differences from '55 on.
Find a parts store with old guys and books,,,,
beat me to it,,,,,,,,,
If you are sure of the year, and you have an 11" clutch, it is from a larger truck, F6 or F7. Not sure of a flywheel difference.
Check this guy, 715-677-3809,,,ring gears are his thing,