I have a Wilwood dual resivor master cylinder. No booster. One master cyl is 7/8" bore and the other is 1". Getting ready to hook up the lines today and i can't remember which master cyl is for the back and which is for the front brakes. Rear is a stock Ford 9" with drum brakes. Front is stock size Mustang II disc brakes. All i can find in searching is the larger capacity resivor goes to the disc brakes, but these resivors are the same size. So not sure if that means the 1" would go to the front or not? Speedway tech is closed today also.