I have a powerflow system fitted to my RS2000, so I might have to give them a call. I brought the exhaust for that second hand and then gotwww.fastfitservicecentre.com at the Moniton Ind Est in Basingstoke to fit it so they might be able to help as they are a performance specialist as well.
ThenI'll give the Tremona garage (http://www.tremonagarage.com/)a call, because a lot of the members of the Hampshire RS owners club use them for the Cossies and other Fast Fords...
Well I've finally heard back from Richard at the Tremona Garage (Ford Specialist) and he said the best optionis a K&N panel filter.
For the exhausthe told me to contact Dave at SOUTHAMPTON TYRE AND WHEEL
Brokenford Business Centre
TEL: 02380 667107
Email: [email protected]
As these guys are the local powerflow specialists in the Hampshire area. I'll give them a call and try and get a rough idea how much a CatBack system would be (assuming you'd all want to keep the Catalytic Convertor on the car)