Too true Not_An_Abba_Fan. I'm not a fan of them either!. lol. Well before my time, that's for sure. More of my parents era. lol.
Often droning is caused by large mufflers, and often the glass-pack type although this will happen with most large ones. If I was building a custom exhaust for a VS V6 i'd be doing something like installing extractors, keeping the exhaust around standard size "as it's already very large for factory", running a good quality resonator "if permitted - laws and all", and then your 2 mufflers. Wouldn't go for large ones, though. The extractors will work nice with initial gas flow and give some more efficiency, while the resonator will give a more even gas flow for further down the line. Running reasonably small mufflers will also help keep the droning noise down while still retaining a little raw noise.
Regards!