Need help decoding VIN and engine number

The engine is not # matching the last 5 numbers will be the same on engine and vin # the 5th digit of your vin is what the car was born with for a engine the letter g is a 318 v8
Hi, thanks for you reply; so it’s not a matching pair although it is a 318 v8 Engine.
I have researched myself a bit further, the leading 5 of the engine number would indicate year 1975, can that be confirmed? That would be another I dictation that these are not matching.