Hey Quazy50. I believe there is one other company, but I can't remember who it is. I sent you a message back about your question. With the copper bike I would go with a chrome air intake. What I think would be really look sweet is the round style intake with a chrome cover that shows the reddish filter on the sides. Both colours would blend in great and you'd get fantastic performance and no adapter is needed. Save $200
See the link.
http://www.sscustomcycle.com/products/engine/Yamaha/Stryker.shtml
See the link.
http://www.sscustomcycle.com/products/engine/Yamaha/Stryker.shtml