There is a place that is in the Marietta/Smyrna area that may want to take on your project. The name of the business is Grand Muffler. They mainly do car and big truck exhaust systems but I know of a customer that went to them with his Ducati Supersport. I do not have any information regarding pricing.
We are waiting for a glitch to be resolved in the Rapid Bike system before we start to carry them. We should know something late January/ early February.
DUCSHOP PERFORMANCE CENTER