Buy my '84. No dents, no rust. Cold A/C that has been converted to 134A. 25 mpg on the highway.
If you don't want the '84, and do buy the '79, nothing dresses them up more than a new set of Caddy emblems. Hood Ornament, Trunk lock cover, and Wheel cover centers. Most of the time these have faded out, fallen off, or whatever. You can still get most of these from the dealer.
'84 for sale:
http://www.autotrader.com/findacar/v...or=&cardist=19