So I copy....and paste
Nick, thank you very much. Geez, another beer I owe you..

I presume these parts are all available from Toyota? I'll check into it.
Vacuum Shift - Manual Shift Conversion
It is possible to convert the 8/87' and later split transfer cases to manual operation, identical to that found in the early versions. Below is a list of parts needed to perform the conversion:
90254-05004 - Roll pin for front axle operation rod
36313-60050 - Rod front axle
(Then you need a hollow 15mm nut, spring, and ball, drill and tap which is common to 34/38mm manual cases)
36307-60030 - Lever arm hi/low
36362-60040 - Gold cad arm for lever above
(Also common to 34/38 manual cases)
The machining is there for front rod seal.