DynoMax Header-Back Exhaust Pipe Kit - 2-1/4 in Pipe Diameter - GM Fullsize Truck 1973-87 89003 H777C06L Crankshaft - 1 or 2-Piece

Crankshaft - 1 or 2-Piece Seal

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DynoMax Header-Back Exhaust Pipe Kit - 2-1/4 in Pipe Diameter - GM Fullsize Truck 1973-87 89003 H777C06L Crankshaft - 1 or 2-PieceDynoMax Manifold Dual Kit 89003 2. 25 in. Tube Size Includes Reducers Exhaust Pipes 16 Ga. Tail Pipe w Side Exits Hardware Does Not Includes Mufflers Mandrel Bends For Better Flow 100% Aluminized For Sharp Appearance and Long Life Longer Lasting and Sharper Appearance Give your vintage vehicle's exhaust system an upgrade with a DynoMax dual header kit. Designed to attach to OE manifolds, it features a special reducer that allows for a variety of