help

hey can sumone help me out? im really thinkin bout buying dudes truck. But theres parts missing off the airbag setup.. And i dont know a damn thing about bags. is there sumwere i can go to see how they work,, how to hook em up etc?? i guess it needs 2 bags,, and 4 valves,, i dont know what kind to get, were to get em,, how much theyd cost,, how to hook em up,, noooothin. and he said sumthin bout a bottle of sumthin instead of a compressor and tank??

these guys have it all, prices and help.