Text of the bill here:

Bill Text - 112th Congress (2011-2012) - THOMAS (Library of Congress)

Sounds like a good start. I'd like to point out that on the emissions front, they are basically just trying to allow small volume light vehicle manufacturers to operate in a similar way to heavy truck manufacturers, in which it's the engine that gets certified for emission compliance, not the specific combination of engine and vehicle.

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Whoever said there's nothing more expensive than a cheap Mercedes never had a cheap Jaguar.

83 300D Turbo with manual conversion, early W126 vented front rotors and H4 headlights 400,xxx miles
08 Suzuki GSX-R600 M4 Slip-on 22,xxx miles
88 Jaguar XJS V12 94,xxx miles. Work in progress.