Confused about 440 plug wire separators & brackets

I'm doing an engine compartment resto on my '78 440. The previous owner lost/trashed the spark plug wire routing separators and brackets. Could somebody please tell me what kind of brackets and separators belong on a '78? The valve covers do still have welded to them the factory-stock sheet metal parts that mount the separators.

Unfortunately, the factory service manual does not show the spark plug wire routing, brackets and separators.

Here's a link to the Year One page on plug wire brackets and separators, if that would be any help to you:

http://www.yearone.com/serverfiles/fbshopmain2.asp?input=spark+plug&SM=1&SC=1

Let me know if you need pictures of the valve covers. Thanks very much!