The Speedmaster LowRise Manifolds are our lowest profile manifold and is also the only one that is street legal on pollution controlled vehicles. It is set up to accept a spread bore carb but comes with an adapter plate that permits the use of square bore carbs. To remain street legal with a square bore carb, you must use one that is also approved as street legal for your application.
![Load image into Gallery viewer, Ford FE 390 427 LowRise Aluminum Intake Manifold [Polished]](http://musclecarhq.com.au/cdn/shop/files/FordFE390427LowRiseAluminumIntakeManifold_Polished_110x110@2x.jpg?v=1750905133)
![Load image into Gallery viewer, Ford FE 390 427 LowRise Aluminum Intake Manifold [Polished]](http://musclecarhq.com.au/cdn/shop/files/Ford_FE_390_427_LowRise_Aluminum_Intake_Manifold_Polished_3_110x110@2x.jpg?v=1750905144)
![Load image into Gallery viewer, Ford FE 390 427 LowRise Aluminum Intake Manifold [Polished]](http://musclecarhq.com.au/cdn/shop/files/Ford_FE_390_427_LowRise_Aluminum_Intake_Manifold_Polished_2_110x110@2x.jpg?v=1750905147)