[carmine]

Stack approx 3/8 inch high.
I had hood clearance issues as well so i eliminated 1 gasket and 1 of small aluminum shield which brought total stack down to approx 1/4 inch.
The larger shield can be notched out in order to clear any linkage obstacles.
In your case you would be using 2 kits because of dual carbs then trim excess on large shield that overlaps between carbs.