In 1980 there are 2 master cylinders listed for the Volare. 1 for manual brakes and 1 for power. Cardone 101822 for power Cardone 101821 for Manual. They look identical, no one seems to have a 101821 in stock to examine. Does anyone have have a manual 2 bolt aluminum MC laying around? I would like to know how deep the channel is for the push rod. I am not convinced that there is a difference between the manual and power. All the stats are identical. But finding info on how deep the push rod hole is seems to be impossible without laying hands on 1 and measuring.