Ive just purchased/recieved one of these for my GT they are still for sale,
http://www.perth-wrx.com/vb/sale/3335-brand-new-hyperflow-tmic-suite-98-01-a.html i havent installed it yet, still waiting for a silicone ypipe to arrive, but those who have installed it so far have been very impressed. You might also want to check out the thread @
www.gtrydaz.com for more info about them. heres some pics.
