I think you need an aftermarket muffler
the HEMI in those it's tamed to a point you couldn't recognise it anymore (plus no HEMI badges on the rear door).
I'm not sure if it would matter or cause any issues by gutting out the existing muffler and installing 2 new one's individually. Maybe best to ask the shop, I don't even know if they have any performance stuff similar to the existing muffler on those, as it's a single unit.
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