[OrrieG]

A couple of companies have a "column saver" kit that has the right size bearing for separating the stock column from the box for reuse. From there it is just mocking it up using dowels or conduit to figure the routing and joint types requied. Borgsen has a real good tech article on laying out your shaft and the limitations of different joints. I used their information for layout, junk yard Astro van and stock 74 shafts for the install.