Shadow DN2
The Shadow DN2, also known as the Shadow Mk.III, is a purpose-built sports prototype race car, designed, developed and built by Shadow Racing Cars to Group 7 racing specifications, to compete in the Can-Am racing series, in 1972 and 1973. It was powered by an extremely powerful Chevrolet big-block engine, developing between , depending on boost pressure levels, and generating an asphalt-shredding  of torque The turbocharged system was used for three races, then the team switched back to a naturally aspirated engine, still producing ; which was more than enough to get the job done. References

Sports prototypes
Can-Am cars
DN2