2j BIG SINGLE turbo and 3ichn hks exhuast OR INVIDIA FULL EXHUAST on a Subie or S2K! SOUND LIKE HOT SEX!

,also stock 350zs ( g35s have a milder note but also close but not enough for my vote)

and it never hurts to here a turbo is300 with hks exhuast or a turbo sr20 in anything drifting around