I have a 2001 silverado 4.8l v8. I currently have stock pipe from cat to a flowmaster 40 series into a 4in dump. Would upgrading the cat back pipe into the muffler give a more louder tone? It's not very loud as it is now. And can barely hear it idleing. And if so what size pipe should I do? Or any other ideas on making it louder but still

Sound good