Tbh i don't think it is a true sound as mine and every other zorst i've heard sound different when the car is under load ie 1st, 2nd,3rd etc etc.
Would love to hear one on pull away
you're right - just checked a few for sale on autotrader, and it doesnt look standard.
i assume that's not a bad thing?!!!
Post up some more pics of it including the back box and i'm sure someone will tell you what it is