Last model years of the Diamante. Dynamite car. In excellent Condition goes for about $5800 retail. Less from a private party. Very resistant to Rust and stuff like that.

Or go with a Mitsubishi Galant (LS V6 or GTS V6) 2004+. A 2004 in perfect shape is about $7500 retail. Stay away from the 4 Cylinder, its adequate, but not enough at highway speeds.