I ask because I have a 3" 304 straight tail pipe I made up for my CP-E exhaust, and had it black glacier Cerakoted, but have not installed it yet (was going to put it on for the 2020 rallies for the 'U.S. stage car look', but the ones I was going to work on were ALL cancelled this year).
I wanted to get an idea of what it would look like, why I asked it that was a 3" outlet or not.