[Graham08]

You're looking for a Char-Lynn torque multiplier. I believe Eaton is their parent company now. They don't speed up the steering, but multiply the torque the driver applies to the wheel for power assist. I worked on a supermodified that had one of these. They work OK, but the feel is different than conventional power steering because of how they work. You don't get much feedback through the wheel of what the front tires are doing.

We eventually took the Char-Lynn out of the car I was working on and replaced it with a conventional Sweet power rack and pinion.

With all of the available options now for power steering, I would only install one of these as a last resort. It's going to take up a fair amount of space and require some custom pieces to work.

I vaguely remember the article you're talking about. Any idea roughly what year it was from? I have a large collection of old Open Wheel magazines and might be able to find it.