Hi, I've just sold my b6 a4 avant. I have left over, amongst other things like parcel shelf cover and tinted rear lights, a pair of twin exhaust back boxes. They are,left and right, off the 1.8t and have been cut off after the bend in pipe ,towards the engine side, so they are perfect for someone wanting to do a twin exhaust on a tdi etc. they both look in good condition and tailpipes look ok too. I only want back what i paid for them so, If anyone's interested pm me and will sort something out.