[fred cook]

Holley used to make a 350 cfm four bbl carb. I had one on a hotted up 1973 Capri 2.6 ltr V6 engine. Once properly set up (jetted, etc.) it worked quite well. I believe that I had it mounted on an Offenhauser aluminum intake. Of course, it was a water cooled engine so the manifold would heat up pretty quickly. If there was a way to warm the intake manifold as shown for a Porsche engine, it would likely work reasonably well.