Re: '85 Toyota Truck - Engine Dilemma

>0R and 22R toyota engines are domestic only.
>> The Japanese versions are illegal in the US.
>> Believe me I have checked.
>
>In what way are they "illegal"?
>

This would depend on the laws of the state where it is licensed. The OP is in
the state of Washington USA. Some locales have laws requiring original factory
equipment or tested replacement parts. The engine models not originally
imported were not tested for compliance with smog laws. The engines themselves
may be satisfactory, but the paper trail is missing.
I had a 1980 toyota truck with a 20R engine that I replaced with a 21R imported
engine. This combination passed smog certification several times in California
USA, so it was legal here at that time.