Manual to power box options

FWIW, swapping from manual to power steering has been one of the best upgrades I have made to my car. When you are done have the front end aligned and ask the shop to put in as much caster as they can get, you can even go with the off set upper control arm bushing to get more. This will cure a lot of the lack of feel mopar power steering is notorious for.

The steering box is readily available rebuilt from most auto parts stores here in the US as is the pitman arm. Also, if you can't find a power steering column you can cut down the one you have.