Hey FourFourto,
Well I've been playing around with a new toy. I still have my H3, and plan on changing out the wheels for the new H3T factory steel wheels. Also, I keep having that same problem with my roof rails cracking. 2nd time around.

Fortunately I discoverd that GM changed the design of the rail slightly, but the new part number only exists for one side of the truck. Under my '06 VIN, the other side is still the old part #, meaning the old design. I've been trying to get GM involved, but of course they are useless, so I will probably just buy the new '08 set with the new part numbers.

So here is a pic of the new truck. I am presently restoring it. We're just about there. probably by the end of the month.
It's a 1971, made by AM General, so in a sense it is the Hummer's big brother.