[Doug]

I purchased a Thule box and yes thier supplied mounting kit does not fit the H2 cross rails. I did purchase the optional mounting hardware kit and was able to just utilize the z washers for mounting to the factory H2 rails.
Works and looks great! The silver Thule color matches the rims perfect. If you want the H2 Hummer logo, visit your local sign dealer. This entire package was less then $400. $250 cheaper then the Hummer Box.

Doug
2003 Metalic Red H2
Adventure Series. w/navigation/Sat Radio/Winch