Master cylinder sizes

[SuperRSi]

I am putting an OBP pedal setup in my car and wanted some recommendations on master sizes for front rear and Trans hydraulic actuation. I should know the answers but 10 years of building this thing has blurred many lines...

Thanks guys!

[SuperRSi]

Oops using Boxster S calipers front and rear. Have not purchased Trans slave yet.

[NO_H2O]

I know Tilton has a worksheet for their products. OBP may have one for theirs.

[ricola]

I'm using 0.625s for my 996 brakes which is the smallest available and I would go smaller if I could... I have 0.75 for the clutch but that is dependant on what size slave, clutch etc you are running...