Chevy Duty made up a kit to keep the stock column when connecting up to their power steering kit "I think they use the newer 70-80's box that mounts on the outside of the frame" Part # 76-985A .

Your basically going to need a lower support bearing to support the inner shaft at the lower part of the column. Couldn't you just use an Upper mast bearing on the bottom to support the inner shaft? You'll still to make a bracket to secure the bottom of the column to the toe board, two Borgeson joints and a coupler shaft to make the connection from the column to the Mustang rack.


Joe