You can get these on 84 85 regals montecarlo,s cutlass,s alot of the v/8 cars come with power brakes but you will need to get the brake pedal or drill your pedal for proper instillation ive installed alot of these on my friends cars threw the yrs they work great. I see were he,s not here anymore YOU CAN BUY THESE YOUR SELF at your local parts store just tell your salesman you need it for a 85 regal power booster and master cylinder they come together as a unit ADVANCE AUTO PARTS for around 125,00 dallors.