I'll get this started.
I recently bought a 1966 427/425HP engine out of a 1966 flat bottom boat. I found this pan in the garage of the house. It was the same color as the engine and is a 1966 pan. It was definitely on the engine and used at some point. This is 2 pans very crudely attached to each other.
<a href="
http://s179.photobucket.com/user/sup...jpg.html" target="_blank"><img src="
http://i179.photobucket.com/albums/w...jmll.jpg" border="0" alt=" photo IMG_2341_zpsvszkjmll.jpg"/></a>