you are going to have bend those exhaust to get them to work on a bike a bit and for the sprocket yes you can get a smaller tooth for it. i also put a link for the exhaust i have on my vader.
https://www.steadygarage.com/store/p...cket-428-chain
http://www.ebay.com/itm/Low-Mount-Ex...cAAOSw~XpZOq2X