Checking for rust … common areas?

You look over the entire car for rust.

But the real question is why would you go 800 miles for a 73 valiant?

Here is a nice 71 in Vancouver Washington.
http://portland.craigslist.org/clk/cto/3276891532.html

A 73 in Portland Oregon.
http://portland.craigslist.org/mlt/cto/3275650636.html

69 Dart in Puyallup.
http://seattle.craigslist.org/tac/cto/3278138006.html

72 Dart in Kent
http://seattle.craigslist.org/see/cto/3273822528.html

73 Dart in Kent
http://seattle.craigslist.org/kit/cto/3270297038.html