Complex sentence: The sportier Toyota Chaser appeared in 1977, and later in 1980, the high luxury content Toyota Cresta appeared, and both were exclusive together at "Toyota Auto Store" locations, while the Mark II remained at "Toyopet Store" locations.
Split into simpler sentences: The sportier Toyota Chaser appeared in 1977, and later in 1980, the high luxury content Toyota Cresta appeared. The Chaser and Cresta were exclusive to the "Toyota Auto Store" locations, while the Mark II remained at "Toyopet Store" locations.