Now for the important question- - - - -whose name is on the title? If you have taken possession of the truck by a will, or some other legal document and you're not planning on selling it anytime soon, the fewer waves you make at the DMV to get a title in your name, the better. Since the VIN numbers match between the "Chevrolet" tag that's an obvious new addition and the "GMC" tag that appears to be original to the cab, it might be to your advantage to go with whichever way the current title describes the truck when you do an official transfer of ownership. If an inspection by a DMV official is required, I can forsee some interesting conversations in your future! You've obviously got a hybrid of several years' parts, and quite possibly a Chevy/GMC hybrid as well.
Jerry
