I finished up my steering linkage, and thought I would share. The best part was that I reused most of the stuff I had in the garage - total cost =$25. I started by dismantling the stock s-10 steering column. This gave me the double D tubing and double D shaft. I went to u-pick-it yard and got the intermediate shaft from a 1985 c-10 van. This is what I started with:
Separte the van shaft and cut the stock s-10 steering column into the three pieces shown. I jointed the lower van u-joint with the double D shaft using the double D tubing. I used 1/4" plug welds to joint the three pieces. These are what you should have at this point.
Slide the bearing onto the stock '51 shaft and cap the end with the end piece from the s-10 column. I drilled both and set it with a 1/4" grade 5 bolt.
I had the stock '51 column clearenced for the bearing.
This is what it looks like assembled.
I'm sure there are different ways of doing this, but this is what I came up with. Let me know what you think.