Use steel wheel off an early trooper. Or the alloys, ive got the alloys off a trooper on my 85.
You cant use a real wide rims because they poke out the guards.
And you cant use newer type rims that dish in heaps either because they will rub on the chassis/springs at the rear.
You could probably go with 16x6" hilux/Landcruiser rims but IMO they are way too heavy and make your truck drive like a slug.
On my luv ive got chrome 15x6" rims off a nissan pathfinder. They look to fit ok but my luv has a bent up steering drag link. I had new 16x8 alloys i was going to try and make fit but some bastard stole them.
Go with whatever just try it before you buy.
Bob.
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Current project, 1979 KB Isuzu Ute.
Daily driver, '86 Rodeo Spacecab.
Chasing parts for Isuzu Impulse.