This is from the best build thread I have ever read or seen. It is page 9 of Morris's build and on page 10 Tom Kirkham has pictures of how he helped Morris determine just what was the best ways to get air out of the engine compartment. You will be surprised at how little the side vents do. Scroll down to post # 180 and you can go from there as far as it interests you. Page 10 has the pictures of Tom driving his Cobra with the tuffs taped to it to get an idea of the air flow. Notice the ones around the side vents really aren't moving much.
KMP 259 Phase 2
Ron