Spark plugs wise I'm running NGK Iridium 7's fine so far at 450awhp. Very much doubt I'll need to go to 8's, ever.

As for my catch can I've chosen the drain back to sump option. Any moisture in the oil that is returned to the sump will evaporate away with the heat of the oil.

I've chosen this option as it's not unheard of for catch tanks to fill with good oil on hard launches and hard cornering. That's oil that never sees the engine again with a non return can. For obvious reasons you can't do that too often.

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605whp
Quarter Mile in 10.9 seconds @ 135mph /217kph
0-100 kph 3.2 seconds