No air. Note stock snubber! I can go down an inch if replaced but have to worry about the X frame and the driveshaft making contact. For those who dont know 60-62 had parallel outer rails with a X member like the same year Corvettes. Also they had torrsion bar front suspinsion, making them the lowest trucks Chevy made, especialy looking at the 55-59. Below is full out and full up at 100psi a little higher than stock.