James Redelinghuys owns a Porsche restoration company called Sebring Racing Studio in South Africa. The company occasionally builds non-Porsche vehicles such as their wild Toyota Quantum (HiAce) project. The van is powered by a twin-turbo 5.0 L Toyota 1GZ V12 protruding from in the cabin behind the driver. It features a custom intake, billet T3/T4 twin-scroll turbochargers, 12 injectors from a Porsche 997 Bosch 350 cc injectors, two water-to-air intercoolers, and Maxx ECU. The V12 made 442 kW (592 hp). A TCI StreetFighter three-speed automatic transmission with a 2800 rpm stall converter sends power through a very short custom driveshaft to a Ford Mustang GT rear end with a limited-slip differential. The exterior features a S.A.D. Custom Japan body kit inspired by a Lamborghini Aventador covered in Lambo red and Xirallic pearl paint with a set of Audi R8 wheels. You can read how the project was born in TopGear’s article.
Source: Sebring Racing Studio FB page (no longer active) and Toyota Hiace Modified FB page via Carscoops