So i'm leaving for Mexico over spring break but i had a few questions for ya'll before i go. 1) If i chose a Megan Drift Spec single exhaust would you reccomend the 2.5'' or 3.0''? I'm not going f/i anytime soom. 2) Is 2.5'' = to 70mm? And if i go 3.0'' what mm test pipe is that??

 

2.5 inches= 63mm
3 inches= 76mm

70mm= 2.75 inches