[LS6 RAT]

The article I read was from years ago on the LS6 842 chevelles. They claimed at the time there may have been 3 I believe. The article talked about how Chevrolet had an issue with doing it as the LS6 was a new motor using old 842 head design.
Now perhaps It's the same car that Rick P. mentions as having bogused docs. But the main subject matter of it all delt with unusually optioned cars not just L89 options. Options like liquid tire chain, optic fibre, etc. Seemed like it was a Super Chevy(not always the last word in absolutes.)
If Rick N. says he believes there are none until proven so, I would agree with him.
As far as novas again, they present a different problem in authenticating as there is no specific suffix code for an L89 application as there is for Camaros, Chevelles, or Corvettes. That's why if there ever were any, you would need verifiable paperwork, or a credible original owner.I understand that it sucks that original owners sometimes get "encouragement money" to remember things that weren't, or bogused docs. But unless you want to pay big money for something that isn't you'll need to be very careful.

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Rick,
I agree that Fran would be most knowledgeable on Tonawandas engine build out. In 1971 there were 212 LS6 engines coded as CPW (manual trans) or CPX (automatic trans) but this included 24 engine case assemblies for warranty purposes. 188 Corvettes were fitted with LS6 engines. The breakdown seems to be 34 or 36 coded as CPX and 162 or 164 as CPW. Currently we have located 105 original, real verified LS6 Corvettes, with 14 being CPX and the balance being CPW, with the breakdown being 15 M21 ordered cars and the balance M22 equipped.