360 sb. 2bbl iron intake or 4bbl iron intake with 4bbl to 2bbl flat plate adapter, which flows the best? thank you for your time. RR

If I had a street car with this manifold, I’d figure a way to use the Holley throttle body. It is a really good setup. My 89 D250 was a 4400 lb truck with me in it and it got up and ripped really well. The milage was pretty good also. 17 mpg if I remember correctly.