Sauron327 raises an issue I usually avoid for fear of being the "wet blanket" here. This thing may be too rusty to fix. You need to determine this before throwing lots of money at it. Back in my parts days were threw out a virtually intact '69 Z/28. It had been left outside for years, sunk in the mud along a lake. No floors anywhere, about half the OE radiator/core support eaten away. The axle was so rusty all the cover bolts snapped off. Took what was salvageable, tossed out the rest, even the frame. Can't save them all.