I had one of my center caps pop off or it was stolen, either way I really want to find a match. These rims where the limited addition rims that you could only get at the hummer dealerships. They were made by Speedline, who was then purchased by Amstars and eventually were sold to Boulder Accessories. I have been searching all over the web and no luck, if you have a spare one or a set that you are willing to sell please let me know. Attached are a couple pictures. thanks!

 

Your SOL on finding anyone w/ significant quantities of that wheel, let alone the caps.

 

I have a set of 4...they're brand new. I bought a set of the wheels for my Silverado HD, which I have since sold, and used truck center caps. You can call/text me if you're interested in them. 412.400.5522 - Steve