Hello gents - here is more information that you requested:

WHen i push the brake pedal, I am getting a "wooosh" sound - as if the brake booster is leaking. I am also seeing a leak in the master cylinder seals. The pedal is going almost all the way down when the car stops.

I can bleed the brakes and flush the system - that hasn't been done in 20 years, but I believe the booster is the main issue on the front disc/rear drum setup on mu Cuda. As hard as I try, I cannot get the brakes to lock-up..