Nismo Axle Back Exhaust

Batwing

Why is there not more Axle Back Exhaust made for the Nismo? Or are there?
All I want is better tone, it already has a H pipe from the factory and I'm keeping the stock airbox. The car is tuned to perform from the factory and dont want to retune it. Don't need a full exhaust or the price they ask in my opinion. I dont want to loose low end torque and I dont care about gains past 7000 rpm. I tried Akrapovic and they said there's is for the 370z not Nismo. I like something along the lines of fast intention's tone with 18 resonators so not looking for monster loud like short tales. I think Amuse sounds spectacular but please its a Z not a Maserati and cannot justify dropping that kind of coin on a working mans kind of car.

Searched all the form and Internet but all I see is full exhausts.

Any Suggestions?

Thanks