A Ferrari F40 modified by the same company that created the F40 LM is expected to sell for up to $4.35 million at auction.
This road-legal example was built by Michelotto, the Italian firm that developed the F40 LM for the 24 Hours of Le Mans.
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Originally ordered by Jean Sage, former sporting director of the Renault Formula 1 team, the car was delivered in 1989.
Sage ran Ferrari's F40 IMSA program in the United States before ordering his own F40.
In 1994, he shipped the car to Michelotto for upgrades.
Engine and Weight Reduction
The 2.9-liter twin-turbo V8 received new turbochargers and a lightweight exhaust, boosting output to 527 hp at 7,000 rpm.
That is 49 hp more than a standard F40, while torque rises to 626 lb-ft (849 Nm), an increase of 200 lb-ft (271 Nm).
Michelotto also stripped weight by removing the air-conditioning system, fitting lighter front and rear clamshells, and installing carbon-fiber seats similar to those in the F40 LM.
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Other modifications include 17-inch OZ Racing wheels, Koni adjustable shocks, and a bespoke front splitter.
Altogether, the car weighs 300 lbs (136 kg) less than a typical F40, yet remains street legal.
This F40 was not just a showpiece; it competed in several races, including the BPR Global Endurance GT Championship.
Sage kept the car until 1996, when it was sold to a UK buyer.
The upgraded turbos were removed at one point but have since been reinstalled, and all original parts are retained.
RM Sotheby's will auction the car at its Woodcote Park event in the UK next month.
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The odometer reads 22,699 km (14,105 miles), and the auction house expects a final price between $3.65 million and $4.35 million.