To get back on track, the rarest part on my car is the RealizeTT exhaust. Few 240s run it, and it is one of the only quiet exhausts that you can buy at the moment (Apexi Noir is discontinued) and the Fujitsubo Legalis R is also discon. the RSR exmag is discon. My injector tick/slight exhaust leak/mech. fan in the front is louder than the exhaust, yet WOT is pretty loud. This is with OBX header, and magnaflow cat.
So as you can see, the "quiet" exhaust is going the way of the dinosaur, at least for s14/s13s everyone wants a canister/blastpipe type :\