Master cylinder suggestions

I put a Hornet MC in my 61 American with single reservoir MC years ago. I don't recall now, but think I had to file the mounting holes a bit for it to fit. The stroke and bore is right, you will of course have to change the lines in front. A 70 Hornet/69 American MC would be about right, both with drum brakes. Later Hornet if you have discs up front (Scarebird conversion is a good choice if you don't... assuming a driver since you are willing to deviate from stock). Any 1" bore MC will be fine, regardless of make. I'm running a Ford Ranger power setup on my 63 Classic, but that took some modifications to the pushrod in the booster, and an original 63-66 Rambler power brake bracket.