Genuine AP Master cylinder with plastic tank.
The master cylinder is the heart of any hydraulic system and the hardest to troubleshoot. A pedal that can be slowly pushed to the floor indicates the master cylinder is worn.
Fluid dripping off either the brake or clutch pedal is a sure sign that the respective master cylinder is leaking. Brake and clutch masters look similar, later models have plastic reservoirs, and they are NOT interchangeable because they are different internally.
Brake master has large mounting foot, clutch master has smaller mounting foot.