I have two sets of S calipers. The red ones are stock for my '69 911E. The second pair are ones I bought long ago. The shoulder on the second pair is meatier than the stock pair for my car. Does anybody have an idea what year/model the second pair came on??? Thanks.
This is off of my '69.
This is one from my other pair. As you can see the "shoulder" on each side is more substantial and extends down on each side.
