Tom M:
If cutting and rewelding is required, you do not have to have it done in a machine shop. I recently did the power steering upgrade on my '66, C-10. This upgrade required the original steering shaft to be shortend approximately 1", however each application is different. I cut, prepped, welded, smoothed and painted my steering shaft in doing this upgrade. In doing so, I utilized a Miller wire-feed welder, making sure to get a full penetration weld. Another key is shaft alignment. A 6" long piece of angle iron and two clamps to secure the shaft pieces during welding.
Hopefully you will not have to cut and reweld you shaft, however if you do, it is not a difficult process.
