Well, Ive decided to go a different route than the dual 2 barrel setup. Im getting a 4165 series holley 4 barrel. This is the spreadbore quadrajet replacement series. Its 650 cfm, mechanical secondaries and the best thing is that the primaries are small and the secondaries are huge so it should be perfect for low speeds before the turbo kicks in for mileage and still provide me with the power needed for after the turbo spools up. i just need to do basic mods like solid floats, jet extensions, mill choke horn, etc.