Oh okay it's from a celica. Excellent. They had the better air flow meter apparantly. Hopefully you find it to still be there and not pulled!
Another thing I can think of to help you out is engine dress up. Since you are going to have it all apart it would be a good time to paint stuff like the valve cover. And have you ever thought of baking parts in you house oven? I am not exactly sure how it goes but it is like powdercoating paint kinda thing. Anything that fits inside your oven you can use that method! LOL

 

Good luck!

 

Im curious on the bored throttle body...

Is it a stock unit cut bigger and a new plate put in? Or is it a 5/7M TB or just the TB plate.

Just wondering because I always thought the stocker was especially restrictive.

O and does the supra TB bolt up to the 22RE intake, and the electronics too?