sorry .. But im guessing powermaster motor .. Thats why its called a powermaster .. But without knowing the year ? I/e what kind of brakes >.its a guess ...
These are the only guy who has the remanding NOS GM stock. Antique Old Buick Parts CARS, Inc. Don't bother with a used one as that will only be as old as the one you have. I went down this road a few months back that's why I spent the money and got the NOS one. I ran into more used ones that people told me "worked fine" only to fail a day, an hour, a week, and or a month later. He only has a few left and once they are gone they are gone forever.