I know the S is a stonger engine but what will the Cooper engine take? I hear mine get a little stressed around 6500rpm which I think is the lifters rattling. What do you think my 130,000 engine will take? I ask because if I fit the close ratio gear set I'll be visiting 6500 to 7000 more often. LOL I miss the 7000 to 8000 rpm of the Suzuki engine. The race Suzuki GTI's do 9000+ wow!