I have a set of std (new) speaker brackets for the rear compartment (behind the seats) that I don't need (not the speaker covers - I used those). I used a different bracket and bigger speakers so these were left over. If you would like them and live close to Kent, United Kingdom (or are prepared to pay for the postage) then drop me a PM. They were quite pricey if I remember correctly but I can't be bothered to sell them and it seems a shame to put them in the bin. First come first serve.
I've attached a photo.