I found an alloy wheel from a Honda Passport (re badged Rodeo over here) works quite nicely. I picked one up from a salvage yard for cheap, same bolt pattern, width & offset.
Trooper, Rodeo, Amigo & Axiom wheels "should" also work.
I combined that with a used 285/75x16" (33" dia) that I figure will be close enough in size, when mounted on the front axle, to get back to civilization.
I may have to re think the whole spare situation when I get the big tires on...
Since you JDM guys have the option of 2WD, perfect size match shouldn't be as big an issue as long as the spare ends up on the front axle.