One thing I learned quickly about plastidip is that I didn't need to mask off painted areas like a rocket scientist. If I oversprayed a little then careful cutting with a knife and the over spray peeled right off. As far as the cowls, I removed them from the truck. They are only held in place with 4 metal snaps and a plastic guide pin to line it up. It just took a little bit of gentle prying with a screw driver and they popped right off. After that it was just clean everything up and I ended up applying 4 coats of plastidip. In fact, once I was done, I started to get plastidip fever and started to think about what else needs to be done
As far as the all terrain, this is a badging kit that was made by Morgan Design (catalog page is here:
http://mdgglobal.com/catalog.html). They are the same people who made the tactical edition badge kits as well. From what I can see, it looks like they don't advertise any Hummer kits anymore. The kit I bought 2 years ago from ebay was from this seller who seems to always have Morgan Design badging kits hanging around:
http://stores.ebay.com/2guyswithparts The kit itself was very nice and included 2 new side badges, a rear all terrain badge, a vortec 6000 chrome badge for the rear, the side graphics which you can just barely see in the second photo, the windshield graphic and a matching keychain.
If you are interested and do actually find a source for this badge kit then please let me know. I would like to keep a spare kit over here for future years.
