I will be double keying my crank and using an aftermarket dampener/pulley combo. I would think that should help as well as using a larger crank bolt and ARP hardware.
You're basically telling me to sell everything I've purchased roughly 20k in parts so far turn around spend 30k in parts plus an additional 30k. Did you read what I have purchased, supporting mods about to be purchased and ideas?
If the engine is in the car, you don't have to torch anything. Just jack up the front and use a breaker bar and 14mm hex. Lower the car onto the breaker bar and it will come loose.
That's from water getting past the gasket on the plug cover. I would see a small amount on the passenger side closest to firewall. Before my plug removal I would rinse out all that stuff so when I removed the plug that shit wouldn't get into the cylinder.