The formula is very easy. The hard part is the person's head you're trying to explain it too.
All they want is a Thumpr cam.
That motor represents what probably over 95% of people want and they don't even know it. That kinda torque on the bottom end would slap obliterate tires with decent gears and you just cannot tell people that no matter how hard you try.
Ask me how I know. LOL