The 600 was the long version of the Dodge 400, which was based on the Aries (also reproduced by NEO). Its production started in 1982 (model year 1983) and the convertible was available one year later. The wheelbase was increased from 2.53 m/99.6 in. to 2.62 m/103.1 in., which gave the 600 better proportions than the 400. Here we have a 1984 or 1985 model. The front grille was redesigned in 1986.