I have had one fitted for 2 months now. I would suggest you look at other kits than this unless you are very capable. I had a lot of fiddling to make it fit and was never happy with the engine pulley and belt supplied. I ended up making a new 1 tooth bigger pulley for the front using an off the shelf HTD pulley and an Atlas sprocket for the taper. This gave a much better pulley wrap and belt tension, 1/2" up and down 45deg twist. The supplied pulley gave over an inch up and down and over 90 deg twist way too slack. It cost me $6500 AU at the door. It was not a quick bolt in, beside changing the cradle there was weld around the starter boltup and top isolastic that had to be removed to stop the outrigger plate twisting and jamming the gearbox. Material around where the starter gear rotated in the supplied inner primary needed removing and the central standoff bolt hole needed elongating slightly. The stator holes were wrong and I had to open the stator holes to get an air gap. The starter button took a dive and stuck in and kept driving, it got the flick. I went to leave the coffee shop today and the starter didn't engage but when I got home it was ok again. I have a 1973 850 with a CV $70 carb fitted. It works great, a bit of setup required but not a lot. I have them on 4 bikes now including 2 Norton stroked Triumphs. I have a number of Nortons and had my own business repairing old brits for 40 yrs. 22t on the box and love the roll on. 60mph at 2800rpm, right in the peak torque. I have written a more detailed article to insert in the HMCCQ magazine of which I am a co-editor. I have stuff on Youtube, British bikes by Brian and a website
www.bmcmotorcycles.com where I have many articles of my learning curve from over 40yrs of repairing and building Brit bikes. My life with old Brits includes a recent 2500mile trip on a built from bits 850 ES with a mate on his T150.
