We have gone a step further with our 40-54 Chevy set ups. These air trays are built specifically to mount to our differential notch covers and make finishing up your air ride install a breeze. We build these systems to work with an aluminum 4 gallon air tank, water trap, Viair 380 / 440 / 444 / 480 air compressors, and now offer it with either AirLift, Slam Specialties, or AccuAir valve / mananagements. Insulators, insulated clamps, and other install options available additionally. Come powdercoated black.