[Classic v6 GMC's]

Well I have been busy working away. First things first, I found some information on who owned the truck and what it was originally used for. Hiding above the visor was this registration holder and inside was one of the last registrations (1981), a few of the last gas receipts from shell stations and best of all at the very back was the "Application for Arizona Title and registration". It's dated 11/24/1969 and the truck was purchased from Cialoni Marine Service in Crystal Lake Illinois.
Not sure how the previous owner came across the truck all the way in Illinois but it lines up with him sending the truck to the Lombard coach company located in Illinois. He might have had the coach installed before the truck came to Arizona.