Right-Hand-Drive, 5.4-Swapped GT500 Restomod Sports A Panoramic Roof

If you feel like every restomod is starting to look the same, this wild example headed for auction next month will still stop you in your tracks. Built as a one-off by Mustang Brothers, this 1968 Mustang fastback takes a sharp turn away from the usual restomod formula. Supercharged Shelby power, a full right-hand-drive conversion, and a panoramic glass roof push this build into unique territory, and it is scheduled to cross the Mecum Auctions block next month.

Power comes from a supercharged 5.4-liter V8 from a 2012 Shelby GT500 backed by a TREMEC TR6060 six-speed manual transmission. It’s a combination that delivers instant torque and pulls strongly to the limiter, delivering modern performance without dulling the edges that make a Mustang fun to drive. With just 200 test miles since completion, the drivetrain remains fresh and ready to run.

The chassis keeps pace with the boosted Modular power. A Mustangs to Fear C6 front suspension, frame stiffeners, double-adjustable shocks, and a Watts-link rear suspension work together to keep the car planted and predictable. A 9-inch rearend with 3.55 gears delivers the power, while Wilwood six-piston calipers and large rotors provide confident stopping power. One-off 18-inch Forgeline wheels wrapped in Nitto Invo tires plant the power and deliver modern ride quality.

The right-hand-drive layout immediately separates this fastback from the crowd. A custom polished rack-and-pinion sourced from Australia is charged with the steering duties. Above it, the patent-pending panoramic glass roof dramatically changes the driving environment. Before cutting the roof, Mustang Brothers reinforced the body with convertible-style inner rockers and retained the original 1968 fastback steel roof spine to maintain rigidity. The concept echoes the factory panoramic glass roof offered on 2009-2014 S197 Mustang coupes, but here it’s reimagined on a classic fastback with far more structural and fabrication complexity.

Finished in Brittney Blue Metallic with Wimbledon White stripes, the Mustang balances modern detailing with classic proportions. Flush-mounted glass, modified original steel bumpers, GT500KR-style side scoops, and a custom rear decklid with sequential LED taillights update the look without shedding the car’s classic identity. Underneath, the same level of attention continues with a body-color undercarriage that was wet-sanded and buffed to match the exterior.

This Mustang crosses the block as Lot V509 at Mecum Glendale on Saturday, March 21, 2026. Comparable high-end, one-off Mustangs powered by late-model Shelby drivetrains usually hammer the mid- to high-six-figure range, so if you want something unique and you have the cash, get ready.