JVC,
The hoods from all years of AD trucks are shaped the same and can interchange. The difference lie in how the badging is mounted. The 54 front hood emblem will not fit the holes on earlier year hoods. The side emblems will fit but you will have some extra holes depending on the year hood you are using.

Welcome to the Stovebolt. If you have not already submitted picture of your truck for the gallery you should try to send some in so we can see where you are starting from.

One thing to remember about AD hoods is that they are the same for 1/2 ton to 1 ton but are different when you get above 1 ton models.