Speedmaster Twin-Carb Intake Manifolds combine two four-barrel carburetors to achieve the best balance of drivability, great looks, and outstanding performance for muscle car, street rod and marine applications. Featuring a low profile design and a high flow runner design these manifolds will improve performance from 1500-6500 RPM range.Below are some pictures of the Twin Carburator set up:(Click on them to see High Resolution) Below are some pictures of the Twin Throttle Body set up: (Click on them to see High Resolution) SUPERCHARGER ADAPTOR PLATE To complement our Speedmaster Twin-Carb Intake manifolds we have a range of Supercharger Adaptor plates available which allow for an easy and cost effective way of upgrading to a 67-1 though to a 14-71 Supercharger. These adaptor plates are available as an optional extra for all our Speedmaster Twin-carb Intake Manifolds.