I've been over the original documents several times as best an my mind will allow. My take is that this is a proposal to prohibit tampering with the emission on any new vehicle beginning with model year 2018. You would not be able to legally put a pre emissions engine in an regulation year and older body and no new emission controlled engines in older pre emission bodies.
The automotive business has been after something like this for a while now. It's an extension of their attempts to apply copyright law to people who tune their own EFI systems.
Here's a TEE for you...
http://www.zazzle.com/i_void_warrant...61179862162575
Or a decal...
http://www.rdecals.com/#!product-pag...5-9900df2c16ff
I'm sure Michael Beard can do better ;-)
Dale