My plans for my boat have changed and I've decieded not to install the air ride seat bases or the on board air system. I have 2 seat bases - one was purchased brand new and has never been installed ($800 plus tax) and I have 1 unit that came from a wreck but is in very good condition. Plus a brand new in box Viair light duty on board air system that was approx. $175 plus tax. Selling the whole works for $500 or may consider trades.