I noticed that. I thought: "Three Corvairs! Yea!"
Someone asked me about the expense of the Corvair. I answered, "It's like a new car payment." After they left, I thought about my answer, and tho body, interior, engine and transaxle are original, by the time one adds up suspension and brake, electrical harnesses, etc. that really is true.
As to my prediction, it is based on years of ordering and waiting. In the seventies, I would order and not even the dealer would know beyond a possible particular month or perhaps the month following. Now, they can guess within a week fairly reliably, barring strikes and/or parts shortages. What has happened with the LTZ turbo is unusual but not unique. I had the same thing happen with the 2005 Cobalt SS/SC with the performance package. The order went in as soon as Chevy would accept an SS/SC order February 2005, jumped to 3000 fairly quickly, went into a holding pattern until assembled at the end of May. Meanwhile, the SS/SC's without the performance package option started appearing in the spring, I think around the middle of March. I have never discovered the hold up, just as I do not believe we will ever know why the LTZ turbo was held up while the LT turbo was being assembled.
Laborsmith