2007
In 2007, manufacture of the Academy chassis was moved to 'Caged' in Bristol, and the chassis were now largely computer-made and metric rather than imperial in their measurements. Other than that, the chassis were much the same as the 2004-onwards ones, albeit with some modifications in the engine bay area to accommodate the upcoming Sigma engines. The engines remained the Rover K-series for 2007.
Read more about this topic: Caterham Academy, Move To Metric Chassis