Meh. Truth be told. If volume is what you're after. Just delete the resonator.
I had it done. IMO that's your best bet for louder exhaust note.
Then again my car had nothing but a x pipe connected to glasspack when I bought it.
(Had to pass emissions... needed longer piping for the sniffer) But I'm over it.
If your want to save some coin and can wait.
You can have mine for the lo low.
I'm going to boost my car in the next few weeks (finally) and have no use for it when I do.