This photo shows the completed front end air spring from Air Ride's Shockwave line, as used in the '67-'70 Mustang (PN SKW1022, $969). The unit functions as both a spring and shock absorber. The small, black knob visible at the bottom of each air spring is an adjustment for damping characteristics. There are 12 settings, with No. 1 being the softest at the extreme counter-clockwise position. Start at three or four clicks and then fine-tune to your preference. Air Ride has Shockwave systems for many Fords, including '65-'66 Mustangs, Galaxies, and Thunderbirds.