If you go with the 60 series, you need to weld up a mounting on the chassis,
in AUS, the accepted way is to bolt it in, with crush tubes through the middle... welding to chassis is highly frowned apon by our vehicle mod laws. bolting works fine (square plate with 4 holes, not a biggy).
modify/change the shock tower
you need to move it, and reverse which way the shock pin goes into the tower. . apart from the extra hole or 2 you have to drill for mounting (if your diff is in the standard place, you can reuse one of the original holes), the whole lot is reverseable... and only an anal retentive cruiser owner would pick up that the hole isn't factory (there are heaps of unused ones there already)
add custom steering shaft and supports, modify the steering linkage
standard 55 series column (uni joint end, not rag joint, and a bearing support at the base), coupled with a standard 75 series intermediate shaft works wonders here, easier (especially if your going to get the modification transport approved) than trying to get custom shafts done... as difficult as the shaft mods needed for the factory setup.
as for the steering linkages, a set of 75 series tie rod/drag link/steering arms, or 60 series (need a slight trim, not an issue at all) is all you need. the bonus is that tires over 33 don't hit, and you eliminate a hell of alot of slop from the relay rod/box.
chop a section out of inner portion of the fender. It's a good set up, by all accounts, though as a non-stock modification it is not so desirable to many buyers, if that enters into your considerations.
if selling for originality, a replacement fender isn't THAT hard to come across. but then again, if the buyer is anal retentive enough to pick that a good 60 series power steering conversion (using ALL factory toyota parts...), then they will know that the factory setup shouldn't be on a cruiser of the vintage we're talking about (they'll know the years PS came out...)
but worst case scenario, you can reverse all of it, with the exception of 1 bolt hole in the chassis...
if your worried about that, then the rig probably isn't driven enough to warrant PS.
i've driven both, ANd considered both for a very long time.... there is no advantage to standard ps, and it costsmore