I need to replace the muffler (one side only) of my dual exhaust on my '55 Fairlane.

Wondering if anyone can help me find a place to purchase one.

I checked my catalogs and Concours shows it.  I ordered it from them about 3 weeks ago, but Friday they called to tell me their supplier will no longer sell individual exhaust parts, only complete exhaust systems.  According to their parts catalog it appears to be identical for 55 and 56 and also the same unit for the single exhaust on the 223 6 cylinder cars for those years.

I'm looking for a stock muffler or something the same dimensions for a one-to-one replacement.  Sound absorption characteristics are not a big concern.

I spent about 45 minutes scouring the internet, finding nothing.

Thanks in advance