I'm thinking the same as a couple of other guys here: first thing to do is make sure your steering and front end is all in good order. Start with the ball joints, by taking the weight at the outer end of the lower control arm using a bottle jack or similar. Put a long pry bar under the front tires, and check for ball joint slop while prying the wheel up and letting it go down. Second point is the idler arm. Notorious for failing, often due to the fact that some guys do not realize there's a grease fitting hidden up behind the lower rad hose. The check is to watch it, while someone else turns the steering wheel. The ball joints on the ends of the pitman arm, idler arm, centre link, and outer tie rods can all be checked fairly easily.
If all that is good and free of slop, time to go ver the steering shaft and box. Not rocket science at all. Once all that stuff is fine, you may be happy with the steering, or not.
If not, I think the sport steering box suggestion is the best bet available to you that would swap in with minimum work.