47-55.1 Trying to piece together a project, have questions

[leegreen]

hoods, grills and radiators were different between GMC and Chey but they will fit either cab. GMC front fenders had a hole in them for park lights chevrolet did not. Cosmetic differences to the box sides before/after '54 otherwise they will interchange. Grills changed at 54
Outside door handles changed in 50, the doors have different holes in them
vent windows added in 51 or 52, but doors fit the same

different dashes in 54 and up as well as windshield, the trim around it and cowl vent

rear cab mounts changed after 52, but some people convert to later style anyway

generally speaking, as long as you get hood, front fenders and grill that work together, they will work with your 54 cab. You might need to adjust radiator mount. Front cab mounts will be the same and then you can figure out rear ones

there are a lot of good details and measurements in the assembly manual, look on old car project website for them

Its all very doable to build the truck from parts of different years