Best coil, box , resister combo ?

Sounds like vapor lock to me.

Get an Edelbrock insulated gasket and one of their phenolic spacers w/gasket. There are different types, find out what you need.
CHECK HOOD CLEARANCE.

I think you're boiling your gas, because your carb. is too hot.
Nothing to do with ignition!

For performance, you want to raise your carb. anyway.