Got everything in place for my on board air using my stock ac configuration. Every thing worked great, but the damn thing makes a god awful noise when not engaged. Found out a bearing in the pulley is bad or something. Not making the noise while engaged threw me for a loop. Oh well, the industrial supply store Grainger is my new best friend. Their site is http:// http://www.grainger.com . Went into one of their retail stores in Houston and got their catalog for a hard copy. I never knew how much crap( tools, welders, air tanks, blah, blah, blah) I wanted till I had that catalog in hand. Got all my info for the build up from this site http:// http://woody.ih8mud.com/onboardair.html I hope it all works well once I get the bearing installed. Oh yeah, i used my front bumper for a tank.