Any guesses as to what engine this intake fits?

gzig5 said
I have so many questions....

Do the square ports have butterfies as well? They lead to one of the intake ports? Found a pic of the heads that mates to.
Click to expand...
no, just the round ports have the butterflies.

as 1WRT mentioned they only function at higher rpm and they're cable actuated via motor and the ECU.