Steve, starting from the beginning, by any chance does the rattle go
away when you press down on the clutch pedal? If so, that's the
release/throw-out bearing - which of course has no relation to the
bearings on the clutch shaft.
Assuming that didn't make the rattle go away - (sorry Russ) - you don't
need a 'new'/later driveshaft, though it is very difficult to get the
donuts for it, especially the rear one for the early driveshaft. Your
smaller yoke (which attaches to the rear of the driveshaft) will fit the
later tapered clutch shaft. I'm 'pretty sure' you will need the later
clutch housing, and you'll definitely need the clutch shaft/flywheel
unit from the later one. The later flywheels are identical to the early
ones - except - the four bolts holding the shaft to the flywheel are
larger.
I'd check or have your mechanic check with APE to see if they have the
later clutch housing with the shaft and flywheel.
Should you stick with your early driveshaft, and that the clutch unit
comes with the later somewhat larger yoke, I'd be interested in the yoke
if the splines are pristine.
Good luck on it,
Biba
Irwindale, CA USA
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