My "new" '74 Duster- or why I need a project like a hole in the head

that is the coolest instrument cluster I have ever seen, where can I get one?

The cluster itself is just a rally gauge cluster out of a '69 Barracuda. I added the 150 mph speedometer from a 70/71 340 rally cluster, and bought a reproduction tach. Because the rally dash bezels are often broken (mine was), and I didn't have the originally rally dash in my car, I cut the bezel down and when I repaired it to make it even instead of having the stock "leg" hanging off. All of that is covered in pretty good detail earlier in this thread.

The carbon fiber is just an overlay, made by Detroit Muscle Technologies. He made the upper overlays already, but I was able to send some bezels back and forth and he now makes the lowers as well. His store is here http://stores.ebay.com/Detroit-Muscle-Technologies-LLC

Rally clusters are easy enough to find used. The entire metal dash is different, but you can find those as well. Or go the cheap, labor intensive route like I did and modify the original dash. And the overlays can be purchased from DMT.

But my cluster has a lot of custom work, so if you want one "just like" mine I guess the short answer is you have to make one, because you can't "get" them.