It's pretty tough, you would need to have a bearing at the bottom with the shaft sticking out, you would need some sort of "thrust" bearing so the shaft wouldn't fall thru. You would need a bracket at the bottom to hold the column. Of course any welding has to be done by a pro on the shaft (in my opinion). Let's see if anyone has any ideas, realistically it is not worth the trouble when you can get columns to solve the problem. But if you really wanted that original column you can do it.