if this is in thw wrong place I apologize. i recently got so TA performance headers for my 1972 455 GS convertible. my plan is 3 inch exhaust from the header with an H pipe to a flowmaster super 50 with electronic cutouts just before the muffler and then the pipe being necked down to fit through my N25 bumper. my goal is quiet for when my wofe and son are in the car but hella loud when the mood suits. the engine has been rebuilt and does have stage 1 valves in 1971 heads so I figure it will breath better, perform better and give me my loud muscle car like high school without making me file for divorce. Id love yalls POV. and this is a cruiser.