Who makes the closest modern substitute to the Mopar 2660518 muffler?

Noticing how the huge, wonderful old muffler on Gertrude is dented, I think about replacing it. I looked up the number of the original, and found one at Hilltop for an obscene price, as usual with them. I also have seen a number of offerings by Walker which look close to the right proportions. While I CAN certainly take those nice dual pipes I put on Mathilda just a couple summers ago, which were bent for a '67 model, I LIKE the current big muffler and single pipe setup on this car, and...

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