Thanks for your reply, Paul.
I am too old, fat and crippled to be rooting around under the car, especially since it functions just fine for now. If something goes haywire I will address it then.
My car was originally a V8, 3 speed manual. I would think whoever did the conversion used the original bellhousing along with original z bar and linkage. Since the dimensional relationship of the clutch components is the same for small and big blocks, why did GM feel the need for different z bars and lower clutch components?
I'm just curious more than anything.