This is an update for the Alphasim HE162 that includes files that allow the choice of either an A-1 (Early Production) armed with two 30mm cannons or an A-2 (Late Production) armed with two 20mm cannons. You also have the choice of pilot with or without yellow life vest. The included AIR files uses statistics from the actual plane and also turns the AI controlled plane into aggressive fighters, the original AIR file only allowed the AI to fly pretty much straight and level, never engaging or even evading.