Dual Rotation 4150 to 102mm or 92mm LS Throttle Body Adapter 3/4" Aluminum This set up allows you to put a LS throttle body on a 4150 flanged intake in any position meaning you can have the throttle cable cam on the driverside, passenger side, front, or rear of the engine works with dual carb set ups aswell made in america with american made 6061 billet aluminum Cable or Drive By Wire