He asked if anyone has fitted them before not "has anyone got them fitted" which you seemed to read it as. Not sure he needed to ask much more did he? Seems like a genuine question to me?
Anyway. I've not done them myself but having changed the half moon seal which was fiddly to say the least, I'd say you'll need the 3306 (?) chain tensioner tool and then to mark the chain and gears with tipex or similar to mark their position before removing the chain. I'm sure Tuffty mentioned doing this before, but he may have changed the whole unit.