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What are you trying to do. If the tip is all your buying then there will be no differance in sound. Just get a new exhaust if you want your exhaust to sound better.
Looks like he has aftermarket exhaust. My magnaflows cae with 3 1/2" tips. Looked really big out of the box, but they look great on the car. Look much better than the stock 2 inchers! They do hang very close to the bumper. It's kind of a tight squeeze, but it looks great!