Here are some links to LARGE photos of a 68 with AC, I used these and others for my reference during restoration.
What you probably need is a "front on" picture of an assembled engine with everything assembled.
The 68 service manual has some good information on how pulleys and brackets are installed.
I would suggest downloading the photos in these links and then open from your computer so you can see them full size.
https://i.imgur.com/ZEJTGtB.jpg
https://i.imgur.com/Qh3aPc1.jpg
https://i.imgur.com/vDtZhfM.jpg
https://i.imgur.com/EQ6OKYY.jpg