You should have no problems with fitment of your combination of parts.
The '53 and '54 cabs mounts are the same, so the '53 cab will fit on the '54 frame.
The '54 front clip will mount to the '53 cab.
And of course, the '54 bed will fit on '54 frame.
Carl

1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission