Andyinville? Who is that? A member here? a Website? I too will insist on a pipe that passes below the engine (not to in any way lessen my appreciation of your contribution here, however). I realize that some fabrication on my part will be necessary to make it fit right, as every bike frame is different. But someone could possibly offer a 'some assembly required' kit with most of the pieces necessary? It's so hard to determine on Ebay etc. which expansion chambers would work well with these engines or what the various dimensions are etc. I would be willing to pay a little more to get most of what I need together in one kit. Any suggestions or chance you would offer something like that?