Convert from power to manual steering

I have a TRW book & it lists the same pitman arm from 63 through 72, except for a different one for 383 cars. There is an adapter to fit a manual box to a power steering column. Mancini Racing has it, part # MRE8770. $119.95. Don't know if that's "affordable" or not but it's probably cheaper than finding & shipping a used column. They say it makes connecting your power steering column to a manual box a "5 minute installation." Don't know who, but I'm sure others sell it as well.