original steering box, the inner shaft is one piece and not connected to anything. The worm gear on the bottom is pressed in, I believe. You will need to cut the inner shaft off and I think there are kits to cut the outer tube shorter and put a bearing in it to support the end of the shaft. I think once you do that, you grind or mill the shaft so you have 2 flats on opposite sides. to connect your new column to.