The Kaiser-Frazer Fan Club facebook page has a picture of a 1951 type Kaiser AMBULANCE that is incorrectly called a station wagon.
Several European coachbuilding/commercial body building companies offered a station-wagon type design on a custom basis as shown in the two pictures here. The company building these two types (herse and ambulance) was in Holland and got sedans from the Rotterdam assembly plant.
The third photo of a 1949 Kaiser Ambulance was made by an American custom body builder for a hospital in MA. In time the car went to ground in a junkyard not far from the city where the hospital was located.
Kaiser-Frazer themselves never did a station wagon body for a vehicle, although the idea was sketched up and considered for possible production. Had more cash been on hand it might have been offered as a Henry J/Allstate for 1953.