Staley52, would you please fill in your location on your profile? That would make a big difference for your assistance from us. EZSnow, you should do the same.
I know of a dealer who was the first (and probably the only) dealer that can custom fabricate Fisher plow brackets just for GM Hummers, including H2. The name of dealer is Arrowhead Equipment, located in New York.
Here is the link:
http://www.arrowheadequipment.com/home.htm
Even if you are too far away from them, I think that you could order a custom undercarriage and have them ship it to you, and you can buy the rest of stuff at your local Fisher dealer.
Good luck!