The nice thing about the 75 up Novas is you can use Camaro front end goodies. In 75 the Nova changed the front subframe to a front steer instead of rear steer like it was. The Concourse was the upscale car for the day. Just watch for rust in the usual areas, especially in the real subframe rails. If you're going to back half it, the floor and rear frame condition it a moot point.
If you have any questions, just ask, someone will point you in the right direction.