2.5 to 3.0 Exhaust

Yeah I probably should have specified that, my apologies!

I have TTI headers with a 3 inch collector. I was also thinking about going the X-pipe route but from what I've heard in videos it's not as "muscle car" sounding, a bit more modern. I'm hopefully trying to achieve a loader, deeper exhaust sound without sacrificing whatever performance I currently have.
Gibson Performance Mufflers
Just change to these MWA mufflers for the sound you're looking for with no loss in power. Worked for me. 2.5" exhaust. Changed from a sporty kind of sound with strait-through Magnaflow kind of muffler to the muscle car tone I was looking for with MWAs.