So I thought I would ask some of you guys that are more motor builder/gear heads than I am, what you think. When I bought my '17 RK, I had the dealer put the SE Stage IV Kit in it so it's covered under the 5 year warranty plan I bought. After they finished the build, I asked what plugs they put in it. They said the stock HD Plugs would be fine for that motor. The reason I question that is because when I had a local race builder tune my '03 RK with a Stage III Kit in it, he told me that he changed out my old plugs to a set of colder plugs because of the BB Kit and Cams. (I'm almost positive he said colder..... they are Autolite 4162 plugs). It makes sense to me that you would want to run a different plug other than stock on a non-stock motor. Anyhow, would you run just stock plugs in my new M8 or something else? I already know about "Oil Thread-esque" debate over regular spark plugs vs Iridium vs something else, and that's not what I'm asking. Just wondering about hotter vs colder vs stock in this application. Thanks for the input fellers.