alpineracer--
It's not really a performance upgrade, but more of a recontent thing. Ford probably should have equipped the cars with this thing right off the assembly line. In fact, they DID do just that in Europe with the Mondeo. Ask Terry Haines about that.
It's something I want to get for the car, because I know it'll run smoother, and be nicer to its own internal parts. I have not put mine in yet, but when I do, I'll give keep you posted!