yes, i believe the manual transmissions were only installed in the base model Cayennes. The bouncing is much better . And no bottoming out, but I don’t drive the car off road. It was great when I was caught in a snowstorm in Flagstaff a few weeks ago tho. The Sach’s are not called high performance shocks but the springs are called a “sport spring set”. the Springs are 1.2” lower. Could be my imagination, but I think I see the car sitting a little lower.