The dual outlet exhaust could be a Buell race pipe, or a Drummer, pics would be nice.
What does "Back pressure issue" mean? If it's running funny I'd suggest a Buelltooth.com dongle and a free ECMDroid program on your android device to help diagnose it. AZMidget on here also makes the dongles as well.
The Larger Right Side Scoop (RSS) is an add on to help is stay cool. Probably a Buell "comfort kit".