Ive found the fiesta coilpack a bit puny (although it may be dwell times in my chip not working it hard enough, I cant edit the L8 chips so have no way of testing), so if running lots of gas etc, it might be worth asking if you can buy the system without the coilpack and then using a larger one, as there are direct fit options available to slot in instead, and they arent very expensive.

Great mod to do, takes away all the hassle of the rotor arm needing replacing etc.