Set plug gaps to 0.6mm, then fit group a coil, as the oe ford one is crap.
Next do the wiggle test on the connections particualrly the CPS CONNECTOR.
Check your CO you want around 2-2.5% CO at idle, look at chip to see what it is as this could be a bad one.
As it is a track car I would without doubt get a fuelling check done under load.
tabetha