I installed one in my car, seems OK and we pressure tested it to 2 bar on the car with no leaks. One side was a little tight so I had to run a drill down the initial larger bore opening that slides over the clutch bearing arm to de-burr it and also it was fouling the bell housing slightly and making it sit at an angle so some grinding was done on it to get it to sit straight (The origional one has a round profile this one is square).
Apart from that it went on fine and the clutch seems to have a better feel to it. Relatively cheap and a recommended upgrade but I do feel that a bit more effort could of gone into the design so it fitted better as they could of machined a couple of mm off the sides to get it sitting better without effecting its strength.
Cheers Paul