62 Upper steering shaft coupler

[bhap]

I have a 62 C10 that will be converted to power steering in the next month or so. I'm looking at the upper steering shaft coupler and wondering if anyone has converted to a universal joint and eliminated the coupler? Since I'll need to change the rag joint, I'm thinking of adding a collapsible shaft at the same time. In the picture attached from the 62 shop manual supplement, you can see that the upper shaft has a pin through it that sits inside the coupler. The shaft also looks thicker there. Any ideas on how best to add a universal joint and collapsible shaft? Do any of the later trucks have a shaft that would work with the existing upper shaft and pin? I could cut the pin off, but then I'm getting short on room to attach the new joint. My other option is to just leave it and cut the shaft down lower and use a rag joint at the bottom. Any ideas or experience is appreciated.