This is kind of what I was afraid of. When we were converting "grey market" cars the rules changed nearly daily if not hourly. GA is somewhat hard to get along with on them now too, because even a federal waiver, which says in essence “This vehicle does not have to comply with any emission requirement”, is no good to GA.
Alternate fuel may be the answer, anyone for a VW V10TDI powered Superformance?
Has anyone considered lobying for some sort of waiver? Doesn't even CA have a limited number of waivers.