The Nissan Armada could ditch its V-8 engine in favor of a more fuel-efficient V-6 when it’s redesigned, according to a new report. Citing a dealer source, Automotive News (subscription required) reported on Tuesday that a redesigned Armada is due in late 2023 and will feature a twin-turbocharged V-6 as opposed to the current model’s 5.6-liter…