Complex sentence: In 1977--78 an optional 5-speed manual transmission was available alongside the 4-speed manual, and the 3-speed automatic options, which included a "5-speed" emblem on the left bottom edge of the rear hatch.
Split into simpler sentences: In 1977--78 an optional 5-speed manual transmission was available alongside the 4-speed manual and the 3-speed automatic options. It included a "5-speed" emblem on the left bottom edge of the rear hatch.