I agree that bigger is not always better. Lots of dollars and time on dynos have proven this to be fact. Used to be a guy at local drag strip and we would get onto him about his "little tailpipes" on his 1966 mustang. He ran a full exhaust where just about everybody else was using header mufflers and dumps. He consistently blew everybody into the weeds. This guy had done his homework and had tuned his exhaust to what his engine required. He was an engineer of some sort and could prove on paper the gas dynamics that led him to his exhaust setup. In a nutshell, his exhaust got SMALLER the further back on the car it went. He proved to me and a LOT of other folks that bigger is not always better.Later,rcs