Disc brakes.. 2 or 4 piston?
I looked at Mancini's website on the master cylinder. The copy is unclear because it does not state that they are dealing with aftermarket brake calipers. The statement that their sizing assumes that four piston calipers are being used on the rear wheels leads me to believe they are dealing with something like a Wildwood conversion.
Here is AutoZone's solution to what you are looking for. The benefit is that it will bolt up to existing lines without having to modify them.
http://www.autozone.com/autozone/ca...e=14400007&itemId=prod10595&parentId=cat10005
