Process of elimination mate. Go to Ford, get some F6 plugs part # AGSP22Z11. These are the best plugs and are only about 12-14 bucks each. If you are going to get your car tuned in the near future, gap them down to 0.75mm. This will save the labour getting it done later when you up the boost. Then go on ebay and get yourself some genuine Ford coil packs for dirt cheap. FORD BA - BF Brand NEW Genuine 6-Pack Ignition Coils - eBay, Other, Car Parts, Accessories, Cars, Bikes, Boats. (end time 19-Mar-10 04:40:50 AEDST) For about $250, you will get away with brand new genuine plugs and coils. If you go to ford for the coils, they will sting you about $500 for the set!