any one know of anywhere that sells a hi-flow sports cat etc? or anyone got one for sale? if not im thinking of just buying one for another car and cut the existing pipes and welding some flanges on.
Janspeed make them
online automotive do them
Matt Humphris does them
To be honest though when we compared the emissions between a janspeed one and a standard one there was only a smallish difference, and they are really quite pricey.