Opinions needed with exhaust!!!!!!

[cobra_stang96]

Hey guys how it goin, I have a situation where I cant make up my mind between exhaust tips. I was wondering what you guys think I sould go with 2.5 mac lx tips, or some other tips that are 3inches. I have a trickflow street heat intake, tf stage 1 cam, throttle body, pulleys, all the boltons besides heads and injectors. So what should I go with 3 or 2.5. and also is there a difference in loudness between the two? And my car also has a cobra rear bumper. thanks for all the help guys.
Here are some pics if it will help you guys any. My car now has a saleen wing on it if that helps to.

 

[ozanracing]

If your exhaust is 3" all the way through, use the 3" tip. IMO

 

[Darkwriter77]

Stick with 2.5". Having 3" tips on the end of a 2.5" exhaust is semi-ricey to me - a subtle version of kids who put a 4" tip on the back of a 2" exhaust - although it will give a tad bit deeper of a tone. That, and usually folks like MAC only have them in chrome, whereas the 2.5" tails are usually stainless and, thus, will last longer.