The 4.0L twin-turbo engine, identifiable by the 5th digit VIN 2, offers a high-performance used engine choice for those in search of maximum power output. This engine’s twin-turbocharged design provides significant boosts in performance, making it suitable for high-speed and demanding applications. Its advanced electronic fuel injection system ensures precise fuel distribution, complementing the high-power V6 cylinder structure that is reinforced to handle the increased pressure of twin turbos. The dual overhead camshaft (DOHC) with advanced timing control further enhances performance, making this used engine a robust choice for performance-focused drivers.