Here are some images from the vendor. He didn't really tell me much more about the exhaust. I sent a reply and asked if there were some sort of bracket to help secure the exhaust but have not heard back yet. The one in the photo appears to be a proto-type for the ones that are for sale.
Concerns: Does the expansion chamber being that far away from the exhaust port have a negative or positive effect. Also, potential leg burn in the mounting location.
Overall it looks like a nice offering thought but I hate to shell out that kinda money right now when there are other things I need on my bike, i.e. drum brake wheel for the front and better front forks.