I was looking into this as there are a lot of them here in Canada and I'm not too far from a Pajero/Van specialist importer so I can actually get a hold of van parts more easily than truck parts. I think the easiest way to do it would be to swap things spindle to spindle from a lhd 2.6 or turbo diesel RWD model Delica (or other L200 van/L300/L400, they got a lot of names go figure), which though rare do exist, so that not only is the steering meant to go there you can get the much bigger van brakes as well.

The big problem is that these are usually RHD racks that would only work in a North American truck if you either flip it and it still works and bolts in or you convert to RHD. Not an impossible task either way, but not necessarily an easy thing to do either. Fortunately they did come in LHD, and were even sold in the US and Mexico. For now though I'm looking at whether the truck steering box is the same as the one in the Starion/Conquest and what they do, because if it's good enough for a much heavier sports car I figure my little gen-1 should be fine. Especially with manual steering.

As a sidenote, these vans are really good sources for a lot stuff of that that's scarce coming of a Pajero/Montero as they're on either a full or modified (unibody models use our frame as front and rear subframes) version of our platform from 1979 to 2007. For example I'm looking at a 9.0" V6 disc brake rear (likely a 4.625 LSD) rear axle that has a rear swaybar and is till our width from a 2004.