is there a exhaust system/rear can. That give off a subtle sound to the vrs?  nothing that makes my neighbours car alarm go off, but something a bit subtle

I had a Jetex sports cat and system on mine, tailpipe looks original and sounded nice and wasn't loud.

wow how much! 

Piper non-resonated all the way for me, just had an ebay bigger downpipe and sports cat fitted too. Nice burble(not too loud) on tickover, sounds fantastic on song