Whew...........I am in over my head most of the time and responding to that question would put me in a whole new league. I read sometime back in "Highways" magazime (Good Sam) that plumbing is different plus other connections difficulties..............that's all I can give on that. Perhaps a search will provide some info.
Are you going to have an air compressor capable of airing up 80# tires or will it just be to maintain the air bags? I have considered the air bags just to improve the ride, but I think I want to have a compressor capable of airing all rig tires. Thinking out loud.