Owning a supercar is cool and all, but driving a really powerful sleeper can be just as satisfying if you're not into wild looks. Take this Mitsubishi Galant for instance. It looks like a really mundane four-door sedan from the early 1990s, but it's actually a full-blown supercar under the hood. With an output of around 800 horsepower, it can outgun any production sedan available right now. And their drivers won't even know what hit them.

Featured on the latest episode on That Racing Channel, this JDM sleeper started life as an abandoned sixth-generation Galant.

Now it looks pristine inside and out, but it also hides a heavily modified four-cylinder engine under the hood. Now fitted with high-performance pistons, head, turbocharger, air-to-water intercooler system, ignition system, and a racing intake manifold, the four-banger packs more than 800 horsepower. That's a big bump from its original output in the stock Galant VR-4.

Amazingly enough, the owner did almost all the work and the tuning himself. What's more, this is a rare car in the United States, as only 2,000 were imported to North America in the early 1990s.

Yes, this sleeper isn't based on a regular Galant. It's the VR-4 version, which was the basis for Mitsubishi's campaign in the World Rally Championship from 1988 to 1992. The Galant VR-4 was the company's first all-wheel-drive rally car, developed to go against the Lancia Delta Integrale, Audi Quattro, and Toyota Celica GT-Four in the rally series.

Using everything it learned from this era, Mitsubishi developed the iconic and far more successful Lancer Evo, which went on to win four drivers' championship and one manufacturers' title.

Sadly, the Galant nameplate is no longer around. Introduced in 1969, it remained in production over nine generations until 2012. Mitsubishi continued to use the name in its home market for the Lancer, sold as Galant Fortis, but that also came to an end in 2017. One of the company's longest-running models, the Galant was also sold as a rebadged Dodge Challenger (1978-1983), Chrysler Sigma (Australia, 1977-1980), Eagle Talon (1990-1998), and Plymouth Laser (1990-1994).