power to manual steering

[rusty76]

I did do a search and well not the info I was looking for. At the moment my ole truck has power steering. It's been fine but now I'm getting ready for a tear down I need some info. I know that to go from power steering to manual I need the box and pitman arm. But what else do I need? Are the boxes same length and mount the same? Any variations in the center link? Also will the stock splines on the column to rag joint to box work? I've seen some companies list the boxes as having different splines than that of the power steering boxes. Any help greatly appreciated. Thanks.