Just come across these on eBay they look quite good IMO, they have a few available by looks of it and seem quite cheap hope it helps someone out - 110918360943
I had carbon ones from them on my z1000. The cans and link pipes we good quality. The clamps and springs on the other had were not! Sounded awesome though!
I brought one of these and the fit is terrible! The link pipe isn't right, and no matter how I tried I just couldn't get it to fit, it sits at such a weird angle and looks daft!