I have 1979 with integrated head and the Caleeforneea smog setup (like ten vacuum lines, two TVS's, and a bunch of other stuff.). The Chiltons manual has more than a dozen diagrams which will probably show the setup you have. You can get it a Kragen's Auto parts if you have one or go online to parts america ($17.00). I put a number label at each line end and connection point, made some notes, and took a bunch of digital photos. When it was time to put it all back together all the effort paid off. If you want I can email my images.
EV \:D