Gronk

I have a 1970 MAch 1 351 C with a shaker hood. I have replaced the heads, 4 barrel intake manifold and carb and electronic ignition. Its a Edelbrock manifold with a 650 Holley 4 barrel card and a MSD pro billet distributer.
The problem I am having now is once it was all assembled I do not have the clearance to place on the air cleaner. Air cleaner hits the distributer
I'm thinking that a 1" spacer under the card would give me the clearance that I need to clear distributer and havew the shaker seal properly in the hood.
Question #1. Is there normally a spacer under the carbs on these engines? There was not one when we dissassembled
Question #2 Is there a spec that tells me exactly how high (space between the top of carb wheer air cleaner sits and the shaker hood - I know it needs to make a good seal)
Question #3 Are there other air cleaner housings out there that i could use if I did not want use the original air cleaner housing with snorkel?