Thanks, Paul! I didn't research that site far enough to find the column-assist units. It looked like all they were offering was a variety of R&P units, and there are some really problematic issues with the sliding coupling between the steering column and the steering gear when a rack is mounted to move with the axle, and even worse problems with bump steer when the rack is mounted to the body. The column-assist units I've encountered on production vehicles are pretty effective, but some of the failures I've seen on warranty claims were on fairly low-mileage vehicles. You'll need a heavy duty alternator to handle the current draw of an electric-boost steering system, I believe. It might be worth researching whether a salvage yard unit could be adapted, rather than letting someone else make a big profit on a system that might require a lot of adapting for your application.
Jerry
