One pair of mufflers I took off my 1967 corvette. I installed the correct ones for that year. They are gently used and sound great, nice rumble. I do not know what correct year they were made for. the inlet is correct but the outlet should have a bend. As you can see in the picture someone used other pieces for the bend and tips. I cleaned them and painted different colors to see what I liked then realized they were not correct for a 67. Bill, email, call or text is ok.