You are right... There is controversy on all the ZL-1 Corvettes except for Judski's, even with the Chandler 'museum' car whether it is/was a real factory ZL-1; I've never seen that one, so I don't know.
There is a great story behind the one that is accepted by everyone as being a 'real' ZL-1; the Daytona yellow one owned by Roger Judski (of Orlando, FL area) and which sat on display in the NCM for a couple of years. Part of the story and history is pretty well documented in this thread:
http://www.corvetteforum.com/forums/c3-general/2256296-1969-zl-1-previous-owner-story.htmlThe car was purchased/obtained somehow by a drug dealer, and the car was confiscated in 1990 and sold by the gov't in 1991 via Auction. Roger Judski purchased the car at that auction for $300,000, which seemed an astronomical amount at the time (He told me and some other fellas that he *risked* everything he owned to buy that car at the time), but it was probably a great investment that would be worth several Million $ today if he sold it.
What I recall from accounts at the time (1991) is that it would have gone even higher had there not been an 'auction mixup' (confusion). There were two serious bidders, Roger Judski and a representative for the LA Times publisher, Otis Chandler, for his museum). The rep had been told to BUY the car so he would have undoubtedly bid higher, but at the $300K bid, apparently BOTH bidders believed they held that bid, but the auctioneer stated that Judski had the winning bid.
Supposedly Chandler was extremely upset with that situation; I've no idea if he ever hired that same person to represent him at any auctions again..
