Suggestions on which plugs to go with

Bewy said

And below is why Plat & Irid is superior. That fact that they last longer is a byproduct, not the reason to use in a performance engine.

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You can do the same thing with a fine wire plug. Same thing Bewy.

The fine wire is what requires less voltage to fire, not the rare earth metal.

Like I said, I’ve tested most spark plugs out there at one time or another and the biggest trick to getting a spark plug is:

Proper thread pitch and reach.

Heat range.

After that it’s all nonsense about electrode size, multiple ground wires, rare earth metal electrodes.

I’m getting ready to dyno an engine. PayPal me 500 USD and I’ll test what ever plug you want.

And then you’ll know you are wrong.

Again.