Converts LS1 engine to square bore carburetor. Throttle bracket included for 700R-4, 200R-4 and turbo 350. Use OEM factory o-rings for intake gasket. Product Features:Converts LS1 Engine to Square Bore CarburetorThrottle Brkt Included for 700R-4/200R-4/Turbo 350Use OEM Factory O-Rings for Intake Gasket