Bobva, I too am interested in the hydroboost set up. I went on that cummins link you posted and tried looking up the hb that that one fella posted that fits perfect on our trucks- one out of a 98 Chevy van. Went on O'Rileys site to try and locate one and got confused with trying to find a van. Chevy calls them all different names. I knew it wasn't off of an Asrro, cause I was looking for a 2500. If you don't mind, can you spell out part numbers and places you rounded up your parts from? I'd greatly appreciate it. Thanks. Big ragu