Hello, I would have a great deal on a 3 '' TD Intimidator exhaust right now. My question is: what is the biggest difference between a 2.5 '' and 3 '' exhaust? Are there any restrictions to install a 3 '' (do we need to be in a specific HP range)? Currently, the snowmobile has a TD CAI, a DALTON clutch kit and a TD tune. I'll wait for your opinion (pro's & con's) before buying this exhaust and remake a tune by TD. Thank you !