I cannot add any value related inormation, but, I also have a 66 Executive coupe (more pictures here:
http://www.russellrazholder.com/public_docs/forsale.php#exectv), with a 455cid engine which ran GREAT, but, sadly has been parked for some years now... need to retrieve from its home away from home and clean it up; athough not actually for sale (sentimental value), I might consider selling but only so I could have the cash to get an old ford pickup... Knuckleheads Forever!