Manual brake push rod

My 1964 Valiant has manual brakes. I used a 7/8"D master cylinder for a ~1998 Breeze w/ ABS (2 ports) on a 2-4 bolt adapter plate ($30 ebay). The pedal rod fit tight into the MC piston, using a new rubber bushing. I swapped over the rubber dust bellows from a Mopar manual MC. The pedal wound up in exactly the same place. Search my post. Many here buy the kit from Dewey something (posted many times) - 2 to 4 bolt adapter plate plus alum MC for 1980's Dodge truck ~$95. For you better to get their smaller bore option (I recall 15/16" custom-made for ~$120).