Interesting observation. Steve Schappaugh has had many SD's over the years, and it has been a long while since I have seen any of his, so I don't know to which car the observation is referring to. It's an open ended statement, so I can't tell from it whether Steve has a pre-production car, whether he retro fitted an early system to his car (unlikely as that would be) or whether he got the one that slipped out the door. I have learned thru the years with GM to never say "never". But, I will say, for all my years that I edited the SD Registry, none of the cars registered were built prior to the cutoff date that the emission system switch occurred.
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