exhaust recomendations

I have TTI's complete 3inch exhaust system out the back with X-pipe on a 67 notchback and it fits great. I don't remember which offsets on the mufflers but if I remember right if you get on there website and look at there drawings it will tell you. I personally, wouldn't reduce from 3inch to 2.5, I would hate to choke down that 416.

It fit great on my car and sounds good too. I went with the dynomax VT mufflers. No drone.