Stamp formed exhaust muffler with conformal outer shell

An exhaust system for a vehicle, said vehicle comprising an internal combustion engine, a drive shaft defining a generally cylindrical shape and a trunk well comprising a plurality of intersecting surfaces defining at least one corner of outwardly convex shape, said exhaust system comprising:

• a resonator in communication with said engine, said resonator comprising a pair of plates secured in juxtaposed relationship, said plates being stamp formed to define an array of tubes therebetween, said array of tubes comprising at least one inlet, at least one outlet and first and second tuning tubes, said first tuning tube terminating at an aperture extending through one said plate, and the second tuning tube terminating at an aperture extending through the second of said plates, said resonator further comprising first and second external shells secured respectively to said plates, said external shells being stamp formed to define low frequency resonating chambers in communication respectively with said tuning tubes, said first external shell comprising an elongated generally arcuate concave conformal area conforming generally to the shape of said drive shaft, to enable said resonator to be mounted in close proximity to said drive shaft;
• and
• a muffler comprising a pair of plates secured in juxtaposed relationship, said plates being stamp formed to define an array of tubes therebetween, said array of tubes comprising an inlet for communication with the outlet of said resonator and at least one outlet, said muffler further comprising a pair of external shells secured to said plates and defining at least one chamber in communication with said array of tubes of said muffler, one said external shell comprising an inwardly directed conformal area defined by a plurality of intersecting surfaces, said conformal area generally conforming to the shape of the outwardly convex corner of said trunk well.