I have a (new to me) 1972 911T. While the car was on a lift yesterday I noticed that the driver side CV boot had clamps on both sides (inner and outer) of the boot. The passenger side CV boot, looking much newer than the other one, did not have any clamps. Are there supposed to be clamps on these boots and, if so, can you plz advise as to the correct part number (s). I have looked at the 1972 PET and it's not clear to me if there are supposed to be clamps on both sides (inner and outer) of the CV boots.