Fully comprehensive electric powersteering conversion kit by EZ Powersteering for E21
This hideaway electric powersteering unit requires no drilling or cutting in any way. It replaces the original steering column and is completely invisible once installed. The original box remains untouched and the engine bay will retain its original look.
The electric powersteering is speed sensitive and only uses power when steering assistance is needed. The amount of steering assistance is permanently adjustable.
Click this link for a comprehensive installation manual.