Ford Motor Co. in Dearborn has transformed a 1966 Mustang Fastback into a modern performance vehicle for the SEMA Show 2026, taking place this week at the Las Vegas Convention Center.
The Ford Racing R125 (named for the 125th anniversary of Ford Racing) features a 347-cubic-inch crate engine producing 360 horsepower and 400 lb.-ft. of torque. The engine combines a Ford Racing Boss block and aluminum cylinder heads with Edelbrock Pro-Flo electronic fuel injection, giving the classic Fastback a powertrain designed to blend Ford small-block character with modern drivability.
Power moves through a Tremec TKX-600 five-speed transmission to deliver smoother shifts and improved durability compared with the previous Tremec TKO, making it a natural fit for a performance-focused classic build where space and drivability both matter, according to Ford.
The custom build also features two-piece Ford Racing Parts valve covers. Their patented design includes interchangeable top designs, captured O-ring seals, and integrated spark plug wire looms. Ford says this is a small but visible example of the thinking behind the broader build: performance components can be functional, serviceable, and personal at the same time.
The parts featured in the R125 are offered through Ford Racing Parts.
“At SEMA, the R125 will stand as both a tribute and a proof point: a classic Ford shaped by racing heritage, powered by Ford Racing Parts, and built to inspire whatever comes next,” says Matt Simpson, director of customization at Ford Customer Service Division
“There is a reason builders keep coming back to the Mustang. It’s more than an iconic shape or a familiar nameplate. It’s a Ford Racing legend that invites reinterpretation, giving each generation a new way to make the car its own.”
