Ahh Ok, thanks for the info mate.
If that's the case, then I'm guessing you could theoretically plonk either of those engines + the box complete, straight into an is200, and vice versa. That would be an especially good swap for the rx8, as those rotary engines don't last long, and guzzle fuel.
I guess the only way to know for sure, if the 2az-fe would fit, is to mate it upto the box, and see.