This is what I've picked up from previous discussions... Post war FAA Avengers Late War delivery Avenger III: General Motors Eastern Aircraft Division built. TBM3 / TBM3E TBM3 Had an uprated engine which required a redesigned cowling to provide adequate cooling and airflow for the engine’s relocated oil cooler. Intakes at 12:00 and 6:00 o’clock positions (previous variants had just the one intake at the 12:00 o’clock position). Four additional cowl flaps down each side of the cowling. The