Complex sentence: Various engineering refinements that had gone into the Tempest II were incorporated into the last Tempest variant, designated as the "Tempest VI", which was fitted with a Napier Sabre V engine with 2,340 hp (1,700 kW).
Split into simpler sentences: Various engineering refinements that had gone into the Tempest II were incorporated into the last Tempest variant, designated as the "Tempest VI". This variant was furnished with a Napier Sabre V engine with 2,340 hp (1,700 kW).