TWO different companies now offer 1/87 scale bodies in both Caprice AND Impala (some in Police paint schemes trims), in both 4-door sedan and wagon trims. They are available in many colors, and options (the wagons are available with and without woodgrain trim).

Haven't got any yet. Been thinking about an HO scale Chevy dealership diorama (actually an HO scale Ford store, circa 1985 or so).
Photo is of some of Rapido's lineup.