| There were two K variants made.
One was the first and only pictured known to exist. The XP-38K built from the P-38E test mule to test the engine, propeller, and intercooler installation.
The second was the full P-38K variant taken from a P-38J-1 (originally a G and one of the first J models) Serial 42-13558 that was Tested.
War Thunder modeled the Mule or XP.