I found that I have to use a mk3 Commando kickstart to clear the exhaust and the folded rear set foot peg on my Dunfey framed Comet. It has a '71 Commando box. Getting the crank positioned on the spline so it clears everything, allows a good foot position, and doesn't interfere with the Dunstall type shifter is very finicky. The front pipe is a "standard" one I got from Coventry spares. This might be a result of making all the plates a bit thicker than standard Comet plates, pushing out the exhaust mounting. I am wondering what the rumored Comet electric start looks like and if it will work on a Comet special.