the guy who owned the truck for 5 years did all the work his name is adam it is one the the most officall air setup around and it lays frame and it has the fbi 4link setup i beleave it has 3 compressors and two tanks if i remember long story short i bought this truck and didnt have the money to put it back on the road and this guy mike has got it up and goin again glws bro and bump for the truck its legit