I have a 1954 hood on a 1949 truck. It fits like a glove. There is no reason why one cannot put a '47-'53 hood on a '54 truck. The front emblem holes are in the same place on the early models as the '54. The only difference is that the '47-'53 holes are slightly recessed, which makes no difference in mounting the '54 emblem on an earlier hood.
Late '49-to-mid '52, there were extra holes in the hood for the model designation (3100, etc.) on the sides of the hood. You will need to weld those holes up
Your 1954 side emblems should fit in the "CHEVROLET" side emblem holes of the '47-'52 hood. ('53 hoods had the same emblems as the '54.)
Carl
Last edited by 52Carl; 07/27/2018 11:37 PM.