After a lot of thought and research, plus a phone call to Fuel exhausts, I decided to buy their oval Diablo mini in carbon fibre. I am well pleased with the decision, it works and looks well and saves a shedload of weight (3.6kg). At £330 all up with postage and silicone sealant I think is reasonable. I ordered it on Sunday and received it three days later. The fit is perfect, unlike a lot of aftermarket kit that needs fettling and swearing to set up.