Welcome to the forum! A '67 was my first - very nice car. I recently started restoring a' 68, so I'm not far ahead of you. My suggestion would be to start with all of the bushings in the front /rear suspension and also the greaseable joints in the front suspension/steering. These parts are likely old, worn out, and need replacing. There is nothing too exciting about it, but these parts are crucial to ride quality and keeping an alignment.