I have just gone to the Pred and am loving it there are many subtle differances from the X10 to the X11 you can change the X10 to nearly the x11. I think the main differance is at the front end with the revised rocker mount and you are able to ajust the anti squat on the car as well. The main man to talk to would be Graham North who is on this forum all the time and I am sure he will add to your question (and tell me if I am wong
) If you do get a pred enjoy it as it a fantastic piece of kit.