Proposed a filter, carb setup
Ok, I think I have solved the problem
The blue tape indicates where I will have a slot machined to the edge of the phenolic gasket, all 4 corners on both stacked gaskets. Which provides just enough clearance for the rear butterflies.
The anodized plate , I will use as a guide to drill square bolt pattern holes on the base of the carb. There is enough meat to do so.
I mocked it up with the air cleaner, plenty of clearance now
