Compatibility? None. If you've got anything on there that's still Isuzu (TRE's, etc) then you're not going to find anything easier to put in than another Isuzu steering box.

With that said, there's lots of reasons to upgrade to something else - Toyota, Scout, Chevy, etc. The main reason being this: you can hydro assist other steering boxes hella easier than an Isuzu. I know that RobG's done it (and have his pics to prove it) but in looking at the guts of an Isuzu steering box, it just became very clear that any tapping and drilling of an Isuzu box was going to mean welding some fittings first (welding to cast metal = not as strong) and then tapping.

Then again, getting another steering box in there means drilling out the frame where the box bolts up. As far as I know, nothing out there will match up to the Isuzu bolt pattern.

And if anyone can contradict anything I've said I'll be pumped. Been looking for a steering upgrade for a while...
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