This thread is old, but I've some information perhaps useful as an update to those needing a rebuild.
I just ordered the necessary shifter parts from my local Ford dealer via the new part numbers, excluding the boot which they stated is no longer available.
Following are the part numbers I used:
Sockets x 2: 1L2Z-7228-A
Spring: 1L2Z-7Z120-AA
Washers pack of 4: E8TZ-7E018-A
Boot: E9SZ-7277-A (I was unable to acquire this)
Total for these parts inc tax was about $25.00. The washers were around a $1.40, the springs and sockets were just over $7.00 a piece. Delivery time is about a week.
I noticed Autozone as a part number listed for a rebuild kit which includes the necessary items to rebuild our shifter, however it was unavailable. Unfortunately I do not remember the brand.
Now all that is needed is the boot.
Thanks to Mike8675309 for the excellent tutorial & reference link:
Found here
Hope that can help someone!