So I found another '72 on CL ... Opinions?

'72 Valiant, 4-door, slant 6, "needs new transmission"
Fair amount of visible surface rust in a few places - passenger c-pillar is the biggest concern from the pics.

http://seattle.craigslist.org/oly/cto/3679857949.html

I haven't emailed yet, but I'm considering arranging a visit Saturday and thinking of offering 500-600

Any thoughts?