Is active Tansfercase 242 available?

[Balig]

I want the active control of the center diff for racing, off road. I can get an electronic controller that varies how much the center diff is locked, depending on steering angle, g forces, brake pressure etc, but need the active diff to control.
Any drivetrain shop with the knowledge will do, as there is a telephone, fax, internet and freight companies. I live in New Zealand.
Keith