[eschaider]

BobCowan and DonC pretty much hit the nail on the head. The EFI will outperform the carbs in all aspects including mileage. Get the system properly tuned the first time and then begin to explore.

For the first time in your life, as a tuner, you will have complete control of all aspects of the tuning process and can quickly "see" what a particular tune variation actually brings to the table. You will be happy beyond your wildest expectation.

The old Weber setups evolved to eventually incorporate plumbing connecting all the intake ports so as to simulate a more conventional manifold's vacuum signaling. You might want to explore something similar.

Ed