Yes,i know its another muffler question....anyways i have a 71 nova that right now has a 350 but we will be puttin in a built 406. I want to run 3inch pipe back and have mufflers with turndowns in front of the axle. I want somthin that is loud and sounds mean but not to loud inside. I was thinkin of either Flowmaster 50 series, Hooker aero mufflers, or Edelbrock SDT's. Anyone have any suggestions or other mufflers, i would appreciate it.