Welcome from California as well!
The seller sure did a lot of great photos. From what I can see it will need both rear quarters, trunk extensions and possibly trunk floor. The frame rail look good. The whole car defiantly needs to be blasted, but I think its pretty solid overall, but it needs everything rebuilt on it, dash gauges, door panels, seats and interior. 74 are the least desirable cuda's I feel the $7500 he is asking is a little high, but he will probably come down on the price some. The 440 and 4 sp helps some, sense you would have to chase them down.
Check out here to see if there are any members close to him.
http://www.cuda-challenger.com/cc/index.php?topic=106189.0Good luck with your search.