Need help replacing a clutch master cylinder on Mondial 8

I recently purchased an 82 Mondial 8 that is in need of a clutch master cylinder replacement. The resevoir is smashed, so I know I need to replace the unit, refill with fluid, and bleed the lines of air before using.

Is there anyone that can provide a source for the clutch master cylinder besides Ferrari? I think it was originally a Benditalia part number, but others have also suggested that ATE may have a replacement? Has anyone been successful in finding a replacement?

Also, being new to Ferrari Chat I have not been able to find anyone's description of having done the replacement before. Are there any prior articles/threads with instructions and maybe photos on how to replace a mondial clutch master cylinder?

Thanks!

Pete