This pair of Mk. V Hawker Tempest's demonstrate the two different power plants tried out. Nearest is an experimental machine fitted with an annular radiator for its Sabre engine, while EJ 823 was a standard in service version with a Napier Sabre engine with the well known "beard" radiator.
Hawker Tempest. Powered by a Napier Sabre engine that eventually produced 3500\BHP using 2 12 cylinder horizontally opposed engines, one on top of the other. The Tempest did what it said in the packet. It also shot down over 800 V1 rockets.