What ballpark price range are you looking to spend? How far are you willing to look? What constitutes too much project in your eyes?
I just bought my '72, but saw a lot of 1970's along the way. Try using Autotempest and Oodle cars. Last I checked, there was one in really good looking shape near Richmond, VA. #'s matching 383 air grabber 4-speed car. If you don't see it on there, let me know and I'll see if I can dig up the printout at home or if I threw it away.
If that doesn't work, there's a rusty, non-completely bucket one that I looked at in Baltimore. Non-numbers 440, but auto on column.
Nevermind, found link:
http://richmond.craigslist.org/cto/2564656086.html
Other one;
http://pittsburgh.craigslist.org/cto/2576747874.html
Now, these aren't my carrs, and I'm not associated with the people selling them, just trying to help out.