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.

So with that, the 2.5 is fine, the 3" is optimal. There is no reason to choke an exhaust down in size after the collector.

The X-pipe will not hurt the sound of your engine.