1) ground clearance improveded (the conection pipes are 1 inch longer, and the 'touch point' to ground is also 1 inch higher :-)
2) Power. Stock filters and carbs: i wheelie without wanting to!!! (just a little, but hey! Definitively more than before.)
3) Sound... louder... deeper, nicer ....in residential areas i will moderate myself :wink:
A pic (sorry for the shitty quality of the creative webcam go):
http://www.geocities.com/erixweb/images/xxthunders.jpg
Sound (only up to 7000 rpm, too many people walking their dogs):
http://www.geocities.com/traduccioneseurop...pa/Image011.wav