Hi Jim...
Really great info you've provided as usual and I agree the Airbox cars are definitely some of the coolest 'Vettes ever built!.
I was aware that the Airbox Legendary restored was a different car than the subject vehicle but included the link as there's a blurb and some pics of Vin #0834 starting around page 32..
The internal GM Engineering documents at the start of the link are great reading too and it makes a fella wonder if GM would've ended up w/ the troubles they have today if that kind of simple logic was still being used?.
~ Pete