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I should have known you would be the one with the answer. You've helped many of us over the years and I want you to know how much I appreciate the help.
I bought them from Zip Products.
Maybe Zip gets them from Paragon perhaps. They are new so they aren't in the Zip catalog but they were in their on-line products "catalog". They sell the brackets needed separately.
I think the heatshields were a '68 & '69 only deal. I don't know that they would fit a '70 or later but don't see why not.
While you're at it, consider also adding the underbody insulation blanket which would add extra insulation from the heat.