I said stock motor....I didn't say floor-room stock. Exhaust and gears aren't considered 'motor'.
Stock in my opinion as well as many others is stock block, heads, intake, pistons, rods.....
IMRC's are just a operational gadget that helps maintain torque at low RPM, but restricts high rpm hp.
The mods I listed (other than the gears and chip) don't add HP, but free it up.
If what you say is true, a
K&N filter will make a car not stock....if that is the case, than 99% of the cars out there are not stock.