So your in N.Ireland same as me I would drive the car for a while and make sure the basics gearbox, suspension, electrics etc. are good before going mad changing things. I would change the headlights to projectors, There is a Ktec airbox for sale on here you might need to become a member to buy that or look through the for sale section the exhaust is a very sensitive thing on these cars a small hole or change can have a big affect on how the car drives and normally runs do all the basic things like check the scuttle bays for blocked drain holes, totally strip down and make sure the brakes a and handbrake cables are free moving are a big thing will stop you warping discs or when the bake drags pushing up the fuel consumption, don't wind the rear calipers all the way in hard as it will damage the internal hand brake adjustment mechanism and the piston can stick because of corrosion around the neck but can be cleaned up and put back together. I have an extensive amount of wheels and spares collected through the last few years so keep in touch. The exhaust thing I have an Akra Evo fitted which is very good and not very loud which I like but does not need mapped and does improve the performance.