The 1966 Nova dual exhaust system consisted of 2 1/2" head pipes that necked down to 2" at he manifold, 2" tail pipes with resonators and offset inlet and outlet mufflers. Our system comes reproduced from an original system from a low mileage L-79 car, and consists of the following. Correct 2 1/2" head pipes with correct wrinkle bends and flats, extensions, donuts, correct 2" tail pipes although we do leave the resonators off as we have not found a suitable reproduction. We include the correct offset inlet and outlet mufflers, GM style clamps, chevy small block flanges, installation instructions, diagrams and sealant. Reprodcution hangers are available as well as a concours show kit for those of us where original is not good enough.