I have a 69 Roadrunner. Somewhere down the line someone did a disc brake conversion on the car. I do not know what they are. Trying to buy rotors but can not seem to find right ones. They are 11.75 in diameter. It appears all B, E, A bodies all use 11" rotors. Could be C body. Bought set for a 71 Fury but offset was wrong. Can anyone help me identify what I have so I can buy something?