Convert standard manual valve body to reverse - what is needed?

A 1966 factory column shifter - probably why I really disliked the standard manual valve body

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Im using the factory column shifter with my rmvb in my 69 runner. The detents have been modified, tap the shifter down from first (previously drive) for 1-2 change, then tug towards you, and down for 2-3.
I love the way mine works, even if you pull on the first shift, it only goes into third.