Last year, I added the high top and a diesel furnace to the Syncro because I wanted it to be a true four-season camper. What I neglected to consider is that summer is a season as well, and traveling in 90+ degree heat with the windows down absolutely sucks. I needed to add air conditioning. The old rear AC system was completely destroyed, so I embarked upon an aftermarket in-dash install. Here are a few photos of the process.
PigpenSyncro.com 