For anyone that has a mid eighties GM wagon that has Hydroboost. I have found out it is a lot easier to convert it over to a Power Brake booster and master cylinder. After going from auto parts store to another to find out they can't get this part or it's so high that a person can't afford it. I ordered a PBB and MC and converted it over since it's easy to do I would recommend it now my wagon stops better now than before.
well..if you ever need to change it back...call these guys..talk to Johnny! http://mbmbrakes.com/ I'm the dealer up here..smokin prices!!