Hey Jerry,
Which one do you have the parts or the service manual? I'm good on the 79 books but I will check with a friend that has a Factory 79 car and see if he has one or not, I will let you know. It would probably be good to have some pictures of it as I know he will ask of the condition and want to look at what you have. You can send the pictures if you like to
jim@torres.com
Jim