i just gotta say these things are nice. installed a set with compressor in about 4 hours with zero exposed wires or hoses. i would take some pics but don't have a camera. they leveled my truck trailer combo and it rides so good. this leads me to believe the truck sway is not coming from a tire with sidewall flex, it is coming from the axle swaying. the air bags almost act like a stabilizers with 60 psi. anyone wants some tips about install, give me a shout.