Stock means "unmolested"...if you removed that sticker, reflector, changed fastenrs, relocated or replaced that license frame or clamps it is no longer "stock" in the strict sense. If you have ever gone to classic car shows, you know what I am talking about.
Look at Antiques Road Show, and there are those who would rather see the vintage piece lose a bit of lustre then be "polished" or "refinished" to make it look "factory fresh" for the sake of "faking it" so passions run high when taking it to purists. I am more middle of the road...if it can be restored to factory new lustre...why not?...like having that silly label on your mattress, "Severe penalty if removed..."