You have some choices here: you can hit the used bookstores or buy repro's of the manuals you need. Ground Up (site sponsor) has the factory assembly manuals for $19 ; this manual is a must-have. Also, you would do well to get a chassis shop manual, a Fisher body manual, and maybe an overhaul manual. These are all originally GM publications. The major restoration supply places sell many of these. Take a look at the Haynes manual for Chevelles; it can be useful for some things.