This thing looks ridiculous and smells like old gas
The original variable venturi carburetor...... I haven't messed with a Predator in about 35 years.
Iirc, not all of them came with an idle kit, I seem to remember adding one to a Predator we had on my buddy's 77 Blazer.
Eventually we ditched it for a good old fashioned Quadrajet.

-box from Japan and tried to past it off an Opel with the Opel logo. That was the death of Opel in the USA.