Allen the magnaflow is a straight through design with no baffels or chambers to interupt exhaust flow. if i kept my other truck i woulda swapped to magnaflow from flowmaster 40's true duals. that is why i went with 2 maganflow mufflers for when my truck is done. plus i heard it on my friends 2000 Camaro and its quieter under part throttle but screams so nicely at WOT...exactly what i want. although mine will exit in front of the passenger tire( a bit louder due to length) i am also considering an x-pipe.