Complex sentence: Buick engines and various other mechanical parts were brought in from the Buick plant in Flint, Michigan, and incorporated into the Canadian-built automobiles sold as "McLaughlins" though the name "McLaughlin-Buick" also appeared on some vehicles.
Split into simpler sentences: Buick engines and various other mechanical parts were brought in from the Buick plant in Flint, Michigan, and incorporated into the Canadian-built automobiles. The name "McLaughlin-Buick" also appeared on some vehicles.