Just to give you some perspective.....A fellow showed up at Firebird a few months back with a '64 Fairlane Thunderbolt clone. He had the hoses from the carb cover out to the headlight openings like the original. I asked him what size the hoses were, he said 5". I said that is a little big isn't it? He said he reduced them down to 4" last year and the car slowed down.

Just so you know. Those hood openings are nowhere near 4", so you may or may not get enough air. If I did it at all, I might not depend on the hood bullets for my sole source of air. Just tryin' to help buddy.