Identify these (Technic Steering) parts? These three parts do not have part numbers on them, but it is clear they are LEGO parts (they have LEGO printed on them).  I am trying to track down the set that these belong to, or at least a part number.  Any help would be appreciated.
These parts were used for steering in many Technic sets between 1988 and 2001. They are the following parts:


Technic Steering Gear Holder (2790)
Technic Steering Rack (2791)
Technic Steering Top (2792)


Here's an example of how they can be used together for steering from set 8022: