Z1 regulator internal shunt components

This is not a pedestrian query but thought, what the heck? Has anyone removed the internals from a potted as mentioned the 3-screw Z shunt regulators and noted any part numbers/manufactures    on the Thyristors and Zener diode, also resistor band values? Reason, i want to save canisters, just want to purchase individual components. See crazy i know. Could go a different route of a series style circuitry too if anyone has a proven design with enough heatsink capabilities? Last pic is taken from the FSM for internal schematic but don't know if that stands to truth?