Yeah, but have a look at my post on this thread...
http://www.ducatisportingclub.com/sh...ight=spaghetti I'm sure that a good exhaust fabricator could knock up a spaghetti system in their sleep for loads less. Have a look at some of the complex systems they do for cars and I can't imagine they would have any trouble with what is essentially two bits of bent pipe connected by a couple of smaller balance pipes