Aut cum scuto aut in scuto
That 20mm cannon fires outside the propeller's arc, so no need for Herr Fokker's timing gear. This plane looks to be a Tempest, but I am not sure. The radiator scoop looks odd to me.
Spitfire with tropical air filter kit
Supermarine Spitfire Mk VB with tropical air filter kit and CBI paint job. Early to mid 1943.---Ray