There are several examples of mod motors making over 500hp, NA
Prove it. Show me ONE. I've never seen or heard of one. I personally never seen one break 350whp, let alone 400whp or 500whp. I am not trying to be "know it all", and I'm not saying it's impossible. I do pay attention to Engine Masters - mod motors just make 450 HP crank. I'm ready to learn though.