I have never used this system or driven anything that has, but it is not too uncommon. The basic idea is that the pitman arm or drag link has a brain. That is to say it senses the pushing or pulling of the drag link to control the power assist ram.
I believe some people have complained about bump stear with this setup, but that was likely due to poor steering geometry.
There are many options available to improve the steering of your 38. One of the most simple solutions is to swap out the steering box and colum with one from a 41-46 chevy or gmc. This is virtually a bolt in change and will give you a more modern "Saginaw" recirculator ball bearing steering gear. This upgrade will reduce steering effort by up to 30%. Proper size tires will also help with the ease of which your rig will turn.
