Hi I'm new here. My partner and I just bought a 1999 Chevy short bus and have already started working on it. We're hoping to have it roughly converted (not perfect, but definitely road worthy and comfortable) by the end of the first week of July. Our first day, we removed all of the seats and took up the rubber and plywood. Today, we're working on the infamous rivets for the ceiling and walls. We're having trouble figuring out what to do with our heater and the back wall of the bus that houses the air conditioner. What do we need to know about taking the heater out? And would it be crazy of us to leave the back wall intact so we don't have to mess with any of the a/c lines and then just insulate over that? We would remove the back wall bottom panels and insulate them with foam board, but we would like to leave the top ones if that's not too crazy. What do you guys think?