Finally broke down and bought an air-gap
First shot is my modified LD-340. The un-modded version has the divider wall that is sometimes notched. The old Hustle Stuff offering had a choke well for the factory choke. This one also has a mistake on it where the machinest got a little over zelous and the sides of the inatke had to be welded up.
Next one down is the LD4B. Un-modified.
Both intakes have been discountinued for some time now in favor of the Performer for both engines. Though best on a 318. T-Q abled. And recently, the RPM came out for the larger engines. I think it's a shame it can not accept a T-Q on top. (RPM)