Trick Flow Intake

The Air Gap 7576 I have sure works fine but is likely discontinued too, it is about 15 years old it is a street version of the strip one I think.
That is an Edelbrock....
is there 2 versions of the port o sonic ? the one I have is a air gap version .
Yes, but no air gap version. The two versions were a Carter/Holley square bore or TQ carb pad.