Use a drop base filter air cleaner set up from Mancini
I’m not sure on this. Edelbrock should have manifold height on there see site but for sure in the paper catalog.
For what? On the intake runner closest to what it is you need it for.
Stop right there, the PVC connects to the carb at the front on the carb. Not the intake manifold.
The PVC valve should have a check ball or something or the sort in it.
Port the PVC valve? What in earth would you port a PVC?