If you haven’t seen the RingBrothers’ creation, ADRNLN, then you’ve probably been living under a rock since the 2013 SEMA show.

The RingBrothers spent over 5,000 hours of blood, sweat, and everything else that it took to complete this beautiful, one-off DeTomaso Pantera. The car features completely custom bodywork, an awesome two-tone interior that was designed in collaboration with Nike’s Innovation Skunkworks Design Team, and a healthy 600-horsepower GM LS3 engine from Wegner Motorsports in place of the original 351 Cleveland.

The LS3 functions via Holley EFI and the power is routed through a ZF five-speed transmission by Bowler. Custom headers and Flowmaster mufflers give the Pantera its signature roar while the car rides on a set of HRE S101 three-piece wheels. Baer Brakes and Nitto Invo tires handle tight turns and deceleration during spirited drives.

Although the RingBrothers have never directly auctioned off a car, eight of their builds have been to auction at Barrett-Jackson. After taking one last joyride in memory of her late husband, Randy, owner Cheryl Brikl is ready to let go of the car and give someone else the chance to enjoy the car as much as her husband definitely would have. We all remember how much fun Matt Farrah had with the car while he drove it for The Smoking Tire, but now it’s someone else’s turn to own one of the RingBrothers’ most sought-after builds to date.

To see how much ADRNLN will sell for, we’ll have to wait until the auction, which is happening on January 17th. We’re guessing $650,000 will be the magic number; do you have any guesses? If so, then leave them in the comments below.