or get the Healtech Quickshifter iQSE-1, around £260 new. https://www.ebay.co.uk/sch/i.html?_from=R40&_nkw=Healtech+Quickshifter+iQSE-1&_sacat=0&_sop=15
Yeah they're pretty straight forward to fit. I think it took me about an hour or two.The pressure sensor that fits on the gear change shaft made the shaft too long on mine and meant the toe peg was too far down, so I had to lose one of the nuts on the shaft to bring the lever back up to a more comfortable position. If the same happens to you then I can take a picture to show you what I mean.