Clone Hostility
But on the value, if you're not looking to sell it, it shouldn't be an issue. If YOU care that it's numbers matching, then you shouldn't have a problem paying the extra for it. If someone else doesn't care (I honestly couldn't give a rat's *** about what the VIN says), I don't see why it matters. Plus, then you could do some modifying of your own without worrying about killing the value of a numbers matching rarity.