You might be in luck as we may have a local chap in on Saturday who is selling up and deciding whether to return his car back to stock and he has some fitted that we supplied for him...
We lowered a Zed this morning and fitted a rear camber kit too, this one - http://cougarstore.co.uk/index.php?main_page=product_info&cPath=1_9&products_id=50
David, they will add to the sound, I'd fit the Cobra first, use it for a few months and if you feel it needs more noise, then add the HFC's which we can arrange for you...