A friend of mine actually had a blacksmith make adjustments to his steering knuckles on his '72, but his were for the purposes of correcting the Ackermann geometry to make the tires not scrub like they otherwise tend to. So, you probably can have things tweaked on if you need to, though you'll have to figure out what the new parts will need to be or else go with trial-and-error, a painful proposition for swapping parts on a vehicle like this.