Whats the difference between a 1987 monte carlo ss hardtop and 1988 monte carlo ss hardtop?

This was the last year for the fourth-generation Monte Carlo.[20] The 1988 models were actually built in late 1987, with only 16,204 SSs made for an asking price of US$19,320. Appearance and mechanicals were similar to the 1987 model. The 1988 model only came with the lay-down style spoiler, unlike the 1987 model, which came with either the lay-down or stand-up type spoiler. The Aerocoupe did not return, as Chevrolet had unveiled plans to produce the Lumina and race that body style in NASCAR. The new Lumina body style was much more aerodynamic and negated the need for a "sleeker" version of the Monte Carlo SS. The Lumina coupe was introduced as a 1990 model to replace the Monte Carlo. Total production numbers for the final year of the rear-wheel drive Monte Carlo was 30,174 — almost half of the 1987 numbers.

1 model year differance