Does your car not have the washer that's slotted so it fits over the stud that mounts to the frame and also has the tang that inserts into the frame mount?
Part SH085 in this diagram
http://www.hurst-drivelines.com/file...nd_linkage.pdf
EDIT: I think I answered my own question poking around that site some more. Anyway, it was the first thing that popped into my head but Corvettes are all I have worked on with a manual clutch.