AUCTION: 440-Powered 1971 Dodge D100 Sweptline Pickup

Restomod Pickup Blends Vintage Style with Serious Performance

Robert S. Miller March 17, 2025

440-Powered 1971 Dodge D100 Sweptline Pickup. (BringATrailer).

When it comes to classic American pickups, few can match the raw appeal of the 1971 Dodge D100 Sweptline. This particular short-bed example, transformed by Dark Horse Customs in Montana between 2018 and 2023, is far from your average vintage truck. With over $76,000 invested in performance upgrades, this custom D100 is a serious street machine with a modern twist.

At the heart of this build is a beefed-up 7.2-liter (440 cubic-inch) V8, featuring ICON forged pistons, Edelbrock aluminum heads, and a Holley Sniper fuel injection system for improved drivability and throttle response. Built by Advanced Engines, the motor has been bored .040” over and balanced with SCAT rods, a Comp Cams camshaft, and roller rocker arms. Power flows through a robust A-518 four-speed automatic transmission, sending torque to a Moser Dana 60 rear axle equipped with an Eaton Truetrac limited-slip differential and 3.54:1 gears.

Handling and ride quality have been significantly upgraded as well. The factory suspension has been swapped for a custom independent front setup with tubular control arms, while the rear rides on a four-link system with QA1 adjustable coilovers. The reinforced, powder-coated frame has been boxed for extra rigidity, and a Borgeson power-assisted rack-and-pinion steering system enhances control. Stopping power comes from four-wheel disc brakes paired with a Street Beast hydraulic booster.

Finished in beige with a gray grille, the Sweptline body retains its classic charm while integrating modern touches like LED headlights and a Fratzog hood ornament. A Better Built diamond-plate cargo box is mounted in the bed, and modifications were made to accommodate the aluminum fuel tank and 2.5-inch dual exhaust system. Wrapped Hedman mid-length headers, MagnaFlow mufflers, and power-actuated cutouts ensure that this truck sounds as aggressive as it looks.

Riding on staggered Coys five-spoke alloy wheels—18-inch up front and 20-inch in the rear—wrapped in Toyo Proxes ST II tires, this D100 has a commanding stance. Inside, the cab features bucket seats upholstered in brown vinyl, a burl wood dash panel, and a horizontal-sweep 100-mph speedometer. The five-digit odometer reads 22,000 miles, though actual mileage remains unknown.

This high-performance Sweptline is currently up for grabs on BringATrailer.com, with bidding set to close on Tuesday, March 18, at 2:44 p.m. EDT. Whether you’re a Mopar enthusiast or just appreciate a well-built classic, this Dodge D100 is a unique blend of vintage style and modern muscle, ready to turn heads wherever it goes.