Which master cylinder bore size to use for power disc Kelsey/Hayes

Dana67Dart said
1 1/32 to 15/16 you will be fine.

1 1/32 is made in an aluminum housing with 4 bolt mounting

1 inch is stock for disk / drum and drum/drum and power or manual

Is the 1 1/32 aluminum a direct bolt on or does it need any mods?

Do you have a Part number/manufacturer for it?