The stock six-cylinder Toyota gasoline engine is gone, replaced by a modified 12-valve 5.9L Cummins I-6 turbodiesel engine. The stock turbocharger has been replaced by an Industrial Injection PhatShaft 62/70 turbo with 12-centimeter housing. This turbo is making 34 pounds of boost. This Maximum Diesels-built engine has a custom JD Fab wiring harness, it rests on modified Dodge motor mounts, and is said to produce 320hp and 718 lb-ft of torque. The cylinders have been bored 0.020 inch over and fitted with marine-application pistons. There’s also a Hamilton Cams camshaft and 165-pound beehive valvesprings. The engine is cooled by a Ron Davis dual-pass radiator and the stock engine-driven Dodge fan, while exhaust gases are whisked away via a custom 3- and 4-inch-diameter exhaust that includes a Magnaflow muffler. The rig has serious amp-making capabilities thanks to an Optima YellowTop battery, two Odyssey batteries, and a DC Power 270-amp alternator. The pair of silver canisters you see on each side of the radiator are Unique Metal Products air filters and they ensure that there’s a steady supply of clean air even if bug-out conditions are dirt-filled. Sprouting from the air filters is custom 3-inch-diameter aluminum tubing to the turbo. Other underhood mods include a firewall-mounted front axle breather filter, custom windshield washer fluid reservoir, and the rollcage-integrated tubing that serves as the upper mount for the front coilovers.