Kaase 572-Powered 1969 Ford Mustang Boss 429 Up for Auction on Bring a Trailer

Starting with an original 1969 Mustang body, Classic Recreations transformed this car into a Boss 429 continuation. The exterior features quintessential Boss 429 details, including a hood scoop, quarter-panel scoops, a front spoiler, Boss 429 Fender badges, and updated lighting. Painted in a menacing Vengeance Black, the car’s bumpers are color-matched to the body, enhancing its sleek appearance.

Under the hood lies a beastly 572ci “Boss Nine” V8 engine built by Jon Kaase Racing Engines, replacing the original 546ci V8. This powerhouse has a 4340 steel crankshaft and connecting rods, Diamond forged pistons, aluminum cylinder heads, WW Engineering aluminum roller rockers, and a single-plane intake manifold. The Holley electronic fuel injection system ensures optimal performance, and the engine is kept cool with a Be Cool radiator. The setup delivers an astounding 815 horsepower, channeled through a six-speed Tremec manual transmission.

The car's suspension system has been thoroughly modernized, featuring a four-link rear end, tubular upper and lower front control arms, front and rear sway bars, and adjustable coilovers. Chassis reinforcements add to the structural integrity, while power steering enhances handling. Forged 18″ American Racing wheels wrapped in Michelin tires provide excellent grip and are complemented by Wilwood brakes with slotted and cross-drilled rotors, six-piston calipers at the front, and four-piston calipers at the rear.

Inside, the Mustang offers a blend of vintage charm and modern comfort. TMI high-back bucket seats with RJS harnesses provide secure seating for the front occupants. A custom center console, air conditioning, and a premium sound system connected to a Pioneer CD stereo add to the cabin's luxury. The Lecarra aluminum steering wheel frames bespoke Classic Recreations gauges, including a 200-mph speedometer and a 10k-rpm tachometer. The odometer shows just 615 miles, representing the distance driven since the car's completion.

The car's Tremec six-speed manual transmission is paired with a 9″ rear end featuring a 3.70 Positraction differential. Tubular headers lead to a custom dual 3″ exhaust system with a crossover pipe and MagnaFlow mufflers, which exit ahead of the rear axle, producing an exhilarating exhaust note.

This Mustang, reportedly used as the SEMA show vehicle in 2020, carries the serial number 9F01F104236, decoding as a 1969 Mustang hardtop originally equipped with a 302ci V8. The serial plate has been replaced, reflecting its transformation by Classic Recreations.

This remarkable Kaase 572-powered 1969 Ford Mustang Boss 429 continuation is now available for auction in California on dealer consignment, accompanied by a clean Florida title. Don’t miss the chance to own a piece of automotive history that beautifully blends classic design with modern performance enhancements. Place your bid on Bring a Trailer.