I don't know how similar the two are, but I just converted my 1971 pickup to a simple heater system. I found a junk doner for the firewall box, ductwork, and controls. I would think with the number of people converting to AC you would be able to do the same. The hole in the firewall was too big and I had to weld in a patch panel. I also had to fill some of the mounting holes. Instead of drilling new mounting holes, I welded in mounting studs which made installing easier. The wiring changes are very simple. The whole installation process took about an afternoon not including cleaning and painting the doner. It works and looks great. Good Luck!