Is it worth it?

Appears like 2 bbl setups currently sell for ~$200. The days of finding them in junkyards for $25 are gone since too many people know the demand. Too pricey for me. For ~$500 you can get an aluminum 4 bbl intake which saves much weight and allows more options. I suspect a 2 bbl would lower mileage over a 1 bbl. A small 4 bbl could conceivably do better if the primaries were smaller than the 1 bbl, but I don't know of any spread-bore 350 cfm carbs. With a 4 bbl intake, you could mount something like a Holley Pro-jection or Motorvation (and others) TBI. If you could find really small injectors, it might fit a slant. The later is better since it uses common MPFI injectors, which come in more sizes. Myself, I am planning a home-made MPFI manifold setup. That would give the optimal fuel distribution.