I can vouch for the volume of this exhaust. I have the same myself and my neighbours are most appreciative. It still roars when you press the loud pedal but at low speeds is just lovely. Burbles nicely thanks to my map and turns heads but you're not going to get the attention of plod.
Good luck with the sale.
Shade - It might help if you get a better pic. The end is quite thick and has Nismo written around it which isnt visible in the pic above.