I need better ideas than what I got so far. On my sedan I have the sprint car style headers with 3.5 exhaust tucked under the rockers. There is a glass pack incorporated in there and it was loud. I pulled the pipes off and put one of speedways auger baffles in each side and all that done was kill some power. 3.25 gears and 30 inch rear tires and at 55, 60 mph it is deafening. Has anyone came up with a better solution? Does anyone make a round muffler that could be used? I don't mind a hot rod being a little loud but I'd like to be able to talk without screaming.