Where do the vacuum lines go from 305 to stock electric 4 barrel quadrajet

There should be a vacuum hose routing diagram on the emission control sticker under the hood. The sticker is usually on the fan shroud but may be attached to the underside of the hood. If it's gone or no longer legible you'll need a factory shop manual. You can get one either from Faxon Auto Literature in Riverside CA. They have a website. Or if someone is selling a good used one on Ebay. Your local Chevrolet Dealer's Service Department might still have a shop manual laying around. If they do they'll probably be able to copy the page(s) of the manual for you. Hope that helps! Jim