well make your own.....easy just get a 3inch 90 degree PVC pipe bend and a metre of 3inch pipe and make your own.
also a funnel for the bell end. measure and fit. and spray black for stealth look. will Have to take a photo of it sometime. Was cheap to do as I had the parts lying around.
wouldn't of costed any more them say $40 if you needed to buy all the parts!