I would imagine it's almost impossible to find parts for the old BPPC/CSPPC cards, the boards are so tight designs (esp BPPC), there wasn't room for alternative component configurations.
Not to mention the price of the new cards would be unbearable, and performance poor.
@kd7ota
Pegasos is a motherboard, not an OS. So just "Pegasos" not "PegasOS".