McLeod hydraulic throwout bearing for the dual disc clutch. It needs to be rebuilt (new Orings) seasonally, the rebuild kits are not expensive but the trans has to come out.
The threaded adjuster didn't work very well, I fabbed a solid spacer that does work.

asking $150

Here are the McLeod part numbers:
bellhousing 8760-00
thowout bearing 1400-22
clutch 651052-00-07

I used ARP-330-2802 flywheel bolts