1 time posting here, been lurking in the "small block talk" for awhile (sorry, I don't own a Cobra).
This intake was a Ford "over the counter" product available for any Ford small block from 64-66, and also used by Shelby. Intake # is C4RA-9425-A or can be purchased as a complete kit # C4OZ-6B068-E (see pic) This picture was scanned from Bob Mannel's "Mustang & Ford Small Block V8 1962- 1969"
Sorry for the big picture, I couldn't make it smaller without losing the resolution
John P
http://members.shaw.ca/tbolt427/fairlane289.htm