Hi guys, I seen a lot of guys running these type of master cylinders on their early mopars I was told there was some type of part number or you order it through your local parts store and can buy them a lot cheaper than the aftermarket has them. Does anybody have any part numbers on them or what vehicle I should tell them I have
thank you guys, Mopar, or no car and I do have the adapter plate

I have a 69 dart with 73 disc brakes upfront and 11 inch drums in the rear