Cold Taco, are they Unique wheels?
21-7760 is the correct number for the Unique 16x7" white wagon wheel (chav app) however the BS is 4". 16" diameter wheels with 4" BS will clear the TRE's due to the larger diameter, however too deep BS will not work. You can get them chromed and in black.
Unique will move the BS to 3.5", so you have stock BS.
There is another manufacturer who will custom BS your wheels, and send them raw to you. Do a search here of on POR and you will find the name: I do not recall it.
Fitment for the calipers is the issue to consider, as others have mentioned.
I ran the 21-7760 with 255/85/R16's on my 1981 BJ42 for a number of years with no issues. Anything larger and you chance running into spring clearance issues. You do lose 1" track width.
I've got the 21-7760 on my BJ74, with bolt on 1.5" spacers, and all is well. My 35" SSR's clear the springs, and my DD 255/85/R16 Coopers look right. Gained a total 2" track width, as the wheels were stock Unique 4" BS.
You can also order a set of 16" wheels from Toyota. 16x6 with 3.75" BS. Very heavy duty wheels. The number should be here somewhere.
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