'08 locking gas cap?

[CG07SUT]

I'm wondering if there may be an issue with the early build date 07's vs later build dates. My 07 has a drastically different thread pitch on my factory cap than those for early model H2's. There is no way that a cap for an 06 will fit my filler neck. I checked into this after having the truck for one week and someone had already stolen my license plates. Have not had any further vandalism issues, so I quit looking for the new cap.