Advice re exhaust system

[roelbest]

I have tried to keep my '72 RR 440 4 speed is as original as possible here in the UK during the restoration.
I have stock exh manifolds, although the pass side is not correct numbers. I now need to get that rest of the system done.
It has normal rear valence, when I bought the car it had headers.
I would like to have stock looking system fitted and would like a nice deep V8 sound.
TTI system?There is an option between 2 and 3', would that make a big difference?
Thanks for the input!

[Eric]

If you're looking for a stock appearing system, I would not go with TTI.