1040FM This mandrel-bent headers-back exhaust system is custom designed for most 1968-1972 GM A-body cars and is perfect for the person looking for true dual exhaust system. This system comes complete minus the mufflers and allows you to choose the sound level of the Flowmaster performance mufflers you desire for your vehicle. System features include all mandrel-bent 3.00-inch aluminized steel tubing, an H-pipe to equalize the exhaust gas pressures and sound for maximum performance and maximum clearance. Designed for an easy fit, these systems covered by our 3-year Limited Warranty. Notes: Requires 3.00-inch Offset Inlet/Opposite side Offset Outlet such as part# 943048 (Super 44 Series) or 53058 (Super 50 Series) mufflers. Does Not Include Header Collector Adapter Cones or hardware. Does Not align with the factory Oldsmobile 442 bumper cutouts. Fabrication required for installation of H-pipe. Features: Exits Straight-out under the Rear Bumper Mandrel-bent for Maximum Performance High Clearance around Rear Differential Designed for Double Off-set Mufflers 16 Gauge Aluminzed Steel Tubing Does Not Include Hardware 3-year Limited Warranty Includes H-pipe Kit About Flowmaster Flowmaster® is a household name, and for good reason. They've built legendary exhaust systems and mufflers for decades, and now offer performance air intakes, catalytic converters, and headers to give your hot rod performance to match the iconic Flowmaster sound. SPECS Automotive Item Grade High Performance Brand Flowmaster Color Gray Emission Code 3 Exhaust Pipe Wall Maximum Gauge 16 Exit Position Dual Rear Exit Material Aluminized Steel Mount Type Uses New Hangers (Not Included) Product Type Exhaust Accessories Single Dual Dual System Type Pipe Kit Tip Diameter (in) 3 Tip Shape Round Tip Style Straight Cut Tube Diameter 3 inch Tubing Diameter (in) 3 Type of Exhaust Header-Back UPC 700042019106 California Proposition 65 Required No Part Number 1040FM