Ive just bought a Js Racing 60RS catback for my DC5R. Well actually, I was told it would arrive within a month, that was two weeks ago... Hopefully it will arrive from Japan within the next two weeks, when i put it on ill post up a review. Just be prepared to wait two months for anything that is made to order, such as Js products. The Skunk2 Megapower exhaust is a good option, if you dont mind LOUD. Widely used on RSXs in the States, and come in 60mm, 65mm and 70mm depending on your application. Also relatively cheap. Delivered to Aus for around 900 from memory..