Well it sounds like I have plenty of options but I really like the one I posted in the pic.
I did figure out that the overflow tank in the picture I posted was from a 1975 Nova. Not sure if they are the same though 1979.
They will fit a Camaro as I saw a pic of one on the team camaro site.
The issue is they don't make them in the aftermarket and I spent an hour looking for one on line and found nothing. Nothing on ebay or craigslist or racingjunk or google. I don't need it today so I will just keep my eyes open.
I would be lucky to find any cars from the 80s in the junk yards here.