Me neither, they came with the car but never sounded like this with my old motor, just usual "doog doog doog" resonating in a garbage can kind of noise. After I put some more miles on this new setup I'm switching to long tubes/H pipe/Jones packed mufflers.

1967 Dodge Coronet Deluxe station wagon

1.03" T-bars, QA1 arms/rods, Cordoba/GM Metric/Volare brake & knuckle, XHDs, Hellwig rear sway, 318 Magnum w/ air gap, 727, 3.23s