1970 340 Dart

I found a '70 dart that's suppose to be a number matching unmolested car. It has ps, pdb, ac, at. Was power brakes even a option in '70 on a bodies? It has a bucket seat console interior. No tuff wheel or a rally dash, wasn't the rally dash standard on 340 cars? Going by the photos and what the ad says, it's a nice car. Now for the bad part asking price is $30,000.