That might just do stants, thanks. Might just go full cat back as I've read some reviews of the toyosports cat back system and it seems ok for the money and it's similarly priced as that centre pipe you linked.
http://m.ebay.co.uk/itm/140470936321?nav=SEARCH
Not 100% sure if it will bolt straight onto the cat pipe as it's described as a 3" system where standard is 2.5" I believe. I've had a good nose at my exhaust and it's had the second post turbo cat removed as per the PPP.