Yeah a single exhaust can sound every bit as good as a dual imo. I was talking with a guy last night who owns a 1986 Iroc (350cid). He was telling me that originally he had dual 2" exhaust w/ cherry bomb mufflers on it for a few years. He then went a built a single 3.5" for it ( 3.5 y-pipe, 3.5 main pipe, flowmaster 40 series muffler 3.5 in/out) and told me that the car went 6/10ths faster in the quarter mile (from 13.60 to 13.00)! I had no idea a dual 2" with cherry bombs were THAT restrictive!