The M297 is based on the
M120 engine but has been
tuned by
AMG for use in high-performance sports cars. It was offered as a version with a
bore and
stroke of , respectively, and was only available in the
road-legal version of the
CLK GTR. A unit was also available featuring a larger bore of , and was used in
Pagani Zonda models until 2016. == Engines ==