I keep records for build dates and VIN numbers for 67 SS's in an attempt to catch fakes. On this one, the cowl tag date is and VIN sequence are right in line with what they should be at least. That still gives no guarantees that it's the original VIN tag for this car but it certainly increases the chances of it.
Ummmmm........technically, he's in trouble with the law (unless laws are different in his state compared to my state). Having that VIN plate off the car is illegal. NO WAY would I show that in a pic online, ESPECIALLY if I was SELLING it.