What annular throw out bearing

I have a 1990 citation FC that just puked the contents of the master cylinder on the floor under the flywheel.

I think it is one of the SAAB based units.

Is there any way like bore size or whatever to figure out for sure.

That is after I get the car split.

Searching Pegasus and Taylor did not yield any clues.

Car did start like as a 1986 FF and still uses the FF clutch disc spline size.

Thanks in advance,

Thanks,

What annular throw out bearing