Thanks! While searching for information, I went over to H. A. M. B. (Hokey [censored] Message Board, if you're not familiar, it's *almost* as good as Stovebolt.com for great vintage cars and trucks.)
One poster said and I quote: "It's simple. If your diaphragm fingers are flat, you need the long throwout bearing. If they are angled forward, you need the short one." On the clutch I installed, they're angled forward. So I'll get the short one you suggested. Thanks for the heads up on packing the bearing - will do!
Regards,
GW
