Aircraft engines; aircraft engine installation kits comprised of specially adapted metal mounting structures, attached to the aircraft, for securing the engine, along with attachment points for connecting other aircraft engine kit parts, namely, cooling systems in the nature of air, coolant, fuel and oil radiators, coolers, and fans, air induction systems in the nature of tubing, air scoops, flow dividers, water entrapment and draining used for engine induction air, lubrication systems, namely, water and fuel tanks, pumps and lines, fuel systems in the nature of pumps and lines, fuel systems in the nature of pumps, filters, fuel lines, attenuators, and coolers, instrumentation in the nature of temperature, pressure, rotational speed, and fluid flow rate sensors required to monitor and control an engine, control systems in the nature of engine fuel and air systems controls, propeller and propeller controls, electrical power generation and controls, controls for cabin heating and cooling systems, namely, air ducts, heat exchangers, fire-suppression systems comprised of charged bottles, charge gages, mounting bases and straps, pull cables, nozzles, fittings, tubing, and stickers, and cowling, namely, cowl flaps