'65 Formula S always have 10" inch drums on front or some had 9"?

To be fair to 9 inch brakes the reason they don't stop any good now for us driving with them 50 years after the fact is the fact that they took the asbestos out of the lining material. Back when these cars were new I used to slam on the brakes and the wheels would lock up,the tires would screetch and stop. Today that's just not the case even with 10's