Rock Auto sells the replacement rag joint, so I will try that for now. My truck tracks fairly well already, but I can move the wheel back and forth a couple inches each way before I get any movement of the front wheels. It reminds me of one of those old black and white TV shows, where they show a guy driving down the road, and he is moving the wheel from side to side almost continually to make small adjustments.
My plan is to also replace ball joints and tie rod ends, and then adjust the free play in the steering box while I have it all apart. I think most of my front end is original parts from '75, so it should improve things quite a bit.
I'd also like to also replace all the leaf spring bushings, but getting the old rubber bushings out of four leaf springs will not be a fun job. I've looked at videos of guys drilling them out, burning them out (not good), and trying to press them out. None of the solutions seem to work well.
Thanks,
Bruce