Just a thought but what would it cost to have a shop bend you up a new system, useing the old cat, but say just with a new Flowmaster muffler? It might sound cool. If it were me I'd just eliminate the center muffler, you can alwalys install one later if you don't like the sound.

__________________
2016 Corvette Stingray 2LT
1969 280SE
2023 Ram 1500
2007 Tiara 3200