Joe,
Nice looking machine. Most of the mix-and-matching of old trucks like these is only noticed by old truck geeks like us. Unless you are trying to make a numbers matching restoration, I wouldn't worry about the correct year inconsistencies. The only problem with a multi-year truck is when rebuilding and/or buying parts as you must first learn to correctly identify the vintage of the component in order to make sure everything fits correctly. That is part of the fun with this hobby. I have found that the Stovebolt community here has a very robust collective knowledge and can identify nearly any component/part.
Have fun!
BTW, I see that you are located in Huntersville...just down the mountain from me. There are a bunch of guys with AD trucks in your area.
Paul
