Nickathome

Upper left corner of left side of engine block will be the serial number of the engine. If military it should start with or at least contain T245 somewhere in it.

Also ,if military the oil filler neck and dipstick tube will be screwed into the block. If pressed in, then its either a civilian engine, or as in the case of my truck a dodge 230 military industrial engine.

Peer into the right front wheel well and look between the clip and the frame with a flashlight. Under the valve cover should be an info tag. It will give you important data such as when it was rebuilt, etc.

Those blackout light covers are easily obtained through the normal channels like Sid Beck, John Bizal, AB Linn, MV shows, etc.