Compy, your engine is identified as a 1942 Mercury 100 HP Flathead V8. The distributor coil is mounted on the driver side above the head. It may have a transmission from the donor car as well, which is very likely, as the original to the car would not adapt to this engine. A date of manufacture can be determined by the serial number of the transmission, located on the bell housing above the inspection plate. The floorboard will have to be removed to see this serial number, which is of value to you only to satisfy curiosity.
Yes, more photos would be good, and can determine what needs to be done in regard to the radiator. Of interest also would be the frame and motor mount at the location of the missing water pump. The car's serial number will be located on the driver side top of frame, visible from under the hood. It may be greasy and hard to see, but it is definitely there, with a star in front, and a star at the end. Compare that number to the number found on the paper title of the car.
You'll want to take pictures of the underside of the hood at the hood support on the driver side. Your hood has been damaged and functionally repaired, but not restored visually. The damage was caused by the hood support, which is of a unique but inferior design. A caution here: When lifting the hood, the support will ratchet to the open support position, and must be lifted a second time to ratchet to the closed position. Do not simply pull the hood down to close it. Pictures of the interior upholstery, and of the dashboard and it's controls and gauges may be useful. Pictures of the metal floorboard just in front of the driver seat can determine general condition in regard to rust. Picture under the floor at the driver position foot pedals to determine if the original mechanical cable brakes have been replaced with hydraulic brakes, there will be a master cylinder at that location.
Most valuable to you at this time would be the two books mentioned earlier.