Complex sentence: Despite the generally lower specification, the Ensign was the first Vanguard-based car to have a four-speed gearbox, the gear lever was moved from the column to the floor, and overdrive was optional.
Split into simpler sentences: Despite the generally lower specification, the Ensign was the first Vanguard-based car to have a four-speed gearbox. The gear lever was moved from the column to the floor, and overdrive was optional.