I just recently installed the above mentioned air bags on my ancient old dodge chassis Concourse and i was so impressed with the improvements in both the ride AND handling and overall stability and feel that i,d thought i,d put a little plug into their product.
They are availibile for pretty much every common RV chassis and truck chassis as well .
The height adjustability is an added bonus to help level off (@ camp to some extent as long as you have a compressor of some sort to return back to your prefered psi for the road etc.
http://www.airliftcompany.com/products/ ... -ultimate/