my engine will have a mild cam, Dutra duals, freeflow dual exhaust, and 50k shaved off head, other than that it will be stock. i need help selecting a 2bbl. carb. and manifold. i understand "offenhouser" makes a 2bbl. manifold.my car will need at least 16 mpg. because it will be my daily driver. i'm looking for a new set up i can order and bolt on. thanks!