Here is one of the new comps mounted. You have to look close to see the extend-a-bracket at the bottom. These are about half as loud as the Viairs, and my recovery time from being completely aired out with a full tank of air (7 gallons at 200 psi) to steering height (120 psi front/ 40 psi rear) back to a full tank of air went from 3 minutes 30 seconds to 2 minutes 40 seconds. Which means that by the time I get a block away there is enough air to recover from dropping the front after exiting a driveway/parking lot down to 80 psi back up to the 120 needed to turn a sharp corner. It's kind of a big deal. I mean, I never had trouble before but I always needed a couple blocks to recover for that.