Complex sentence: For the first time in history, due to emission considerations resulted in a unique engine application for California customers -' 80 Corvettes sold in California had 305-cid, engines, and all had automatics.
Split into simpler sentences: For the first time in history, due to emission considerations resulted in a unique engine application for California customers. For 1980 Corvettes sold in California had 305-cid, engines, and all had automatics.