I've ran everything from 600 edelbrocks, 670 Holleys, 750 Holleys, 770 Holleys, and dual quads on 318's. I have a 670 on my stock 318 in my '80 truck, runs perfect. I had a 750 (3310) Holley on the stock 318 in a '85 Ramcharger, ran perfect. I have dual quad (2x 600 eddies) on my 318 Duster with summit cam, runs great. So what's the best ?? How well can you tune.......
I'd advise a 750 3310 Holley, or the same in Brawler, because it will work great and if you upgrade the 318 or go 360, or 383, it will still work great. LOL