Tim your black and red 1974 was such a great looking car. The 1975 360 though with lower horsepower was still a dual exhaust non catalyst car in the Duster and the Dart. As you know most cars in 1975 had done away with duals and had catalyst on them. I think if you ordered a 360 4bbl in the Roadrunner (Fury body) in 1975 you could get it as a dual exhaust car also. Good info.