I run the NGK 2 step colder and gap around .022-.023
Others gap .020-.022, but I found a much smoother idle around .022-.023
I have a Pure turbo + meth so maybe the oem plugs will work for your basic application without needing to run 2 step colder plugs and just down size the gap.
https://burgertuning.com/products/ng...der-spark-plug