Brent - you have to remember the air pressure. Some guys put a mark on their gauges for ride ht......I am not recommending air ride , I think the jury is still out. This is one area that KIS might apply.
I have air ride tech's system for the Rolls but, because I am still welding on the frame (rubber does not like welding sparks) I have not installed them.
They are expensive - around $200/bag & over $1000. for the controls