OK, I’m even stumped here! Maybe it’s time to go over some clues. Here are a few obvious things to check out to verify model & age. The cooling tunnel, engine cover or opening, door panel material, door & window handles, steering wheel, speedometer, trim, heater and dash. From what I see here I believe we have a narrow-track ’57 or ’58 FC-150. If you look real close you can even see the two mounting holes for the inside passenger seat mount on the cooling tunnel.