The world of tuner cars is vast and the sky is the limit. All-wheel-drive conversions are becoming more and more common as it is the best way to put insane amounts of horsepower to the ground. Today’s build, presented on That Racing Channel, once again, comes from Alberth from AD Turbo. We recently showcased his all-wheel-drive, 2JZ-powered Nissan 240SX, which is the fastest in the U.S. Now, he is showing us his other all-wheel-drive beast – a 1,250-horsepower Lexus IS300, which is also street legal.

Alberth seems to love the 2JZ engine, which is not surprising, given the potential of the inline-six. While the Lexus IS300 comes with a 2JZ as standard, it’s actually the naturally aspirated version, which comes with different pistons and a different head, from the factory. Even more surprising is the fact that Alberth still uses the stock 2JZ GE head, although it has been ported by Porting solutions.

Most of the other components are pretty standard, as far as high-horsepower 2JZ builds go. The IS300 has a new intake, 105 mm throttle body, 12 injectors (two per cylinder), and an 86-85 Precision turbo, just like in Alberth’s 204SX, which according to him “seems to be the turbo of choice” for this engine. Unlike the Nissan, however, the IS300’s engine has been stretched to 3.2 liters. It’s all being managed by a Haltec Elite 2500 ECU. A Haltec IC7 instrument cluster shows all the important info.

Interestingly enough, the Manley pistons and connecting rods are Honda-spec; not Toyota spec, Alberth points out. The whole setup is good for “north of 1,200 horsepower”, which goes to all four wheels through a 4L80 automatic gearbox with the option for manual shifting from the steering wheel. Alberth eventually shares some performance figures, such as the 60 to 130 mph (97 to 210 km/h) sprint, which takes 2.89 seconds.

A Proper streetcar

Despite the Lexus IS300 packing serious power, and, essentially, serving as AD Turbo’s research and development car, it’s perfectly usable on a daily basis. It even has a full interior, electric windows, and working air conditioner. At the same time, it has enough power to spank a Tesla Model S Plaid back to the nearest charging station, as well as any hypercar foolish enough to go up against it. And, all that, by using a very familiar and proven setup. What's next Alberth?