Nick, looking at the parts listing for the wheel carriers, it looks like they were the same for 1/2 ton trucks only from 1946-1950. Some parts of the wheel carriers for bigger trucks spanned back to 1929 and up to 1950. So what you have probably won't fit AD trucks (up to 1950.)

Kevin
1951 Chevy 3100 work truck
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Photos
1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.