That is made by a guy in Arizona. I can not remember his name off the top of my head. He goes by the screen name JFAB. Also known as jibba jabba, or j auston on
www.hummernetwork.com
Actually there are a few lifts avail for the H1. RubberDuck has a couple, NoMoGMPP (sp?) and 1 other person has made them.
Can be a body lift, suspension lift or both.