Chris, The Pete in your photo is a '76 or newer. Lower door handles, rounded top battery box, 2 air tanks under the box, longer grab handle.
The paint scheme has no name (Peterbilt used numbers), but this design was drawn by Winslow Moore for a factory show truck back in '72/74. It also became "The Patriot" paintscheme for the Peterbilt bicentenial package - in red white and blue, of course. Check with Jerry at www.modeltruckin.com for this stripe.
Tim
October is the current information.
Tim