Wow, it looks like this is on!
Small-volume carmakers get a big break in Motor Vehicle Safety Act | Autoweek
How many Cobra manufacturers will offer completed vehicles as an option? I don't think the appeal would really be there in Cobra land, since the cats and pipes would likely have to be under car, and right now limited to the Chevy LS power plant. I expect Ford would soon have a compliant Coyote though.
(Tom Kirkham posted the link above but I thought it would be relevant to close off this topic)