3" or 2.5" Exhaust ?

I put the 3" system on when I put my 360/380 crate motor in the Valiant with the idea that at some point I will likely go with a big block. Certainly its overkill and I might even be down on power a little, but...
...they fit great, look great, and sound great!
So if you have any aspirations to go bigger in the future, the 3" system is hard to beat, imho.