41 looks the same as my 57 recirculating ball type. Wheel is a spline held down with a nut. I take it you are adapting this to the power steering box. If you are using a rag joint or swivel you will have to add a bearing at the bottom because the original wormshaft the bottom bearing was inside the steering box. I have an old wormshaft you can have so you would need a piece of tube and 2 bearings if you want turn signals you will need something from the mid fifties. if you want 4 way flashers you will need something latter then that or at least the tube size for the turn signal cup.
