Simplify the following text for a Grade 3 native English-speaking person.
Original: Despite this handicap the DFV won the 24 hours of Le Mans twice in its original 3.0 litre form for Mirage and Rondeau ( although the Mirage win in 1975 was with a significantly de-tuned unit ) .
Simplified: The DFV did win the 24 hours of Le Mans twice in its original 3.0 litre form .