We built our own brackets from the ACE stuff and installed them on the front of the unit, like the single valve. NO one at ACE sent us pictures of the rear install so we didn't know where to put them. Took some trial and error (flex) to make them right, but now the ride is perfect, especially towing 7000+ 28 foot trailer. Ours is closer to the centerline than the pictures you provided but the ride after a small trailer height adjustment were spot on. Rides like a 1/2 mil unit, only paid $125 new. It takes time, but it's worth it. Too bad Goofstream can't support us correctly. great rig, just refinements to make it right Just my 2c HJ
