[schade]

theres kits out there ... i think its Air Ride Technologies

There is a guy on FJ selling just the bags ... you'd have to purchase the lines, valves, compressor and tank on your own .. but it might be alittle cheaper

I've looked into it alittle, and the only question i have with them is what's it like in the winter with bags? .. Do you have to worry about the lines freezing due to the water that could be in them? same goes for the tank