Air control valve

[tree98]

You can convert an 870(air actuator) to an 871(electronic actuator) you'll need a new turbo with the electronic actuator and an 871 ECM, wiring harness, Oh and don't forget a custom program to make it all work.

If I were you I would spend a day calling cummins distributors around the country and try to locate that control box. I would bet someone has one.