Kool sound to one person is either noise or not what one thought it would be after installation. That's why there are so many choices. I'm like quikbird and use warlocks on my brand "C". The MOPAR came with Flowmasters welded on and I haven't changed 'em. My adult daughter loves(!) the sound, not my favorite. I don't know what series they are.
One of the absolute BEST sounding cars I've ever heard is Todd Holdren's AutoX '53 Buick. I've seen it run for years at GG events (LS power, Morrison chassis, almost always wins "Hot Rod" class). He's running Borla's. If you ever get a chance, give it a listen. IMO it has the sound and tone everyone tries for and never seems to get.