Stroker Plugs

What's your dynamic compression?
Champion RC9YC equivalent with extended reach
NGK Spark Plugs BKR6EY NGK V-Power Spark Plugs | Summit Racing
Or non extended reach
NGK Spark Plugs BR6ES NGK Standard Series Spark Plugs | Summit Racing
Or Champions, which I've had good experiences with
https://www.summitracing.com/parts/cpn-430