^^^ that was a fascinating read, thanks for the link Mike.
Of course, it was a Cougar Eliminator hood scoop, not an XR-7 (hood scoops were not a part of the XR-7 package).
According to Charlie Henry's Kar-Kraft book, that first owner contacted Kar-Kraft because of a cylinder head problem, but because it was a prototype with cast-iron heads they were unserviceable.
Cool stuff.
- Phillip