i have a complete new hydroboost brake setup from an 84 gn and i am wondering did they use a different pedal assembly from the vacuum brake cars, like the later powermaster cars. the reason is my car doesnt have alot of vacuum, one panic stop and she dies, i had all new brake componets, but no diff. so i figured id give hydroboost a try since it runs off the power steering, so do i need the hydroboost pedal assembly or will the vacum pedal assembly work?