Complex sentence: The Calibra was introduced to counter the Japanese sports coupes of the late-1980s and early-1990s, and employs the running gear of the first-generation Opel Vectra, which had been launched in 1988.
Split into simpler sentences: The Calibra was introduced to counter the Japanese sports coupés, of the late 1980s and early 1990s. It employs the running gear of the first generation Opel Vectra, which had been launched in 1988.