The 5.3-liter LM7 V8 have been sourced from a 2007 GMC Savana, and it is equipped with a FiTech Ultimate LS fuel injection system with a touchscreen controller.Additional modifications include a customized air intake, stainless steel fuel lines, an in-tank fuel pump, stainless steel headers and mufflers, a Flowmaster dual exhaust, an aluminum radiator, and Spal cooling fans.The water pump, alternator, a pulley, drive belts, and spark plugs and wires were replaced.Power is routed to the rear or all four wheels through a 4L60E four-speed automatic transmission with a FiTech programmer and a two-speed transfer case reportedly sourced from a 1990 Chevrolet Suburban.The aftermarket steering wheel fronts a carbon fiber-style panel housing aftermarket digital instrumentation including a speedometer flanked by readouts for battery voltage, oil pressure, coolant temperature, and fuel level.The digital odometer reads 162 miles. Total mileage is unknown.