I did the swap last weekend. A couple notes from my experience...
- I had to take the entire radiator/AC condenser assembly off because the GC shaft would not telescope in (to make it short enough to remove).
- take the clamp bolt from the newer shaft home with you.
- A few good whacks with the small sledge got both sets to separate.
- The new lower shaft was quite a bit shorter than my '81 Wag shaft.
Looks good enough, though.
Don't be yourself. Be someone a little nicer. -Mignon McLaughlin, journalist and author (1913-1983)