sealing hood to Carb any HP gain?

I would say that you would gain from it and I will tell you what I learned at the dragstrip a few weeks back.
It was a real hot and humid test and tune the Saturday before musclepalooza and I made my first pass with air cleaners on(the elements just up out of the pan)Car felt like it needed a good kick in the butt:banghead:
So the second pass I decided to yank the velocity stacks out which left my carbs down way below the openings in the pan and I lost 2 10ths and most of it was lost in the first 60 ft.
put everything back and the car gained back those 2 10ths on the next pass
Being that your a road course car I feel you would gain and probably feel it.