I have a 1983 Datsun 280zx. Cranks but doesn’t start. Have been looking, doing procedures, re-wiring, among other things. The previous owner DID say that water got into both sides of the car. I took pictures of the pcm out of the box. Top and bottom. I’d like to have an opinion as if this is enough corrosion to change my PCM. If it is, then off to the Junkyards.