Sorry , but I think you are wrong . I bought the car in 1985..still had original paint that all checked evenly by 89.
Wrong or not the
H/O called for a different design for a design reason which has proven out to be accurate from my experience and GM doesn't like recalls so things are designed in for a reason...
I am a facts type of person, in the last 20 years I have yet to see an unmolested low mile survivor with an Aluminum hood to prove this out let alone pictures of a high mile one one showing pictures of the hood with the AL unique bracing with the C&C primer markings from the few discussions I've had with people... it's always a story or claiming to know a guy with one etc.
I typically don't like to entertain in hypotheticals when there are unproven explanations that can't be proven out. That's how rumors are spread and where the dishonest car sellers like to hook into those rumors and leverage them for a fraudulent sale.
Car could have been in a collision during the first few years prior to ownership? Original owner could have changed it?
With GM being sloppy with QA the only possible explanation could have been one of the last runs built where they were earmarking Calais off the line at the last minute for conversion or visa versa with early cars and then finding they were having issues with sinking...
I'll look for my ordering brochure listing out all the available option codes, there might even be a line item for the T45 AL hood option not being available on the
H/O.
I know a guy in Wisconsin who has an '83
H/O aluminum hood, very professional trust worthy person, like to collect Saabs... sold me some mint condition sand gray seats.
Swore up and down that it's original and tried to sell it to me recently when we spoke in December.
I had him verify if the holes had the orange brushed primer around the edges that C&C did after they drilled the holes and it didn't.
Also asked if it had the added bracing and it didn't.
After looking at the pictures the center front hole was butchered and the two front holes weren't opened up with a hole saw on the brace to allow for nuts to even secure the scoop on the front sides. The studs on the scoop aren't long enough to clear that brace, I had to open them up when I added mine.
Attached is a picture.
I'll even give you his phone number if anyone wants to purchase it... I believe he wanted $500 or $600 for it, no scoop.