When Jay Leno drives an awesome car, enthusiasts take note, and this week the internet blew up over the 1970 Dodge Charger resto-mod that starred in a recent Garage episode. But you might not remember: this strapping Charger, called "Tantrum," was one of the highlights of the SEMA Show in Las Vegas last fall. Here's another look at a true Mopar monster.

The power: Yep, Tantrum has 1,650 horsepower. That's more than two Hellcats worth of power under the hood. It's a twin-turbo 9.0-liter Mercury Racing engine with a quad-cam four-valve setup. Basically, it's a V8 boat motor developed for cars. Mercury Marine is the crew that developed the V8 for the 1990s Chevy Corvette ZR-1. That all-aluminum LT-5 under the hood cranked out 405 hp – an astronomical figure for the time – and helped make the ZR-1 an icon.

Take a listen to Tantrum's 9.0-liter Mercury mill below.

Who's behind all of this? SpeedKore, a Wisconsin-based performance shop that does one-off pro touring builds. It specializes in remaking Detroit muscle with modern features like carbon fiber, bespoke interiors, and powerful engines. SpeedKore is pretty good at it. Before it threw a Tantrum, it did the "Cudinator" used in some of the Fast and the Furious movies.

You might not know: Tantrum won the Best Domestic category of the GT Awards at SEMA – chosen by your author. The sinister looks were the hook, and the crazy engine solidified its performance cred.

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