Ok my brakes are awful! I do have vaccum brakes, and the front rotors, calipers, and pads are all new, and I also have a billet aluminum TTA vaccum block with tap... I cannot hold any boost at all, and the brake pedal is way too soft, so I was goign to completley bleed off the entire system and flush it with new fluid and start over. Should I also upgrade the back brakes to longer shoes and s10 wheel cyclinders? How do I go about doing all of this...? Please give me some hints, In have to drive to Conroe everyday for work and have two days to complete this task.