After being burned by dealer (who shall remain nameless in case they try to sue me) who charged me $3500 AUD for new water pump - I went to a different repairer when my car started missing (code - cylinder 6 misfire).
They changed out the coil pack for cylinder 6 and now she runs as good as new. - And total cost was only $350 AUD which I thought was quite reasonable. I am happy to recommend the repairer - called Carco Euro in Belconnen ACT.

They showed me the old coil - looks like it was water damaged (rusty) as a result of water from previously mentioned water pump leak.