Email'ed the seller and informed her it is a 63-64 Riv and that the parts are worth more than if it was a 70. she emailed me back saying that she just found out it was a 74 and Thank You! I replyed again with pics of each car. Maybe she'll get a clue but I doubt it.
But the advertisement doesn't say it's a "70", that's what Glenn typed in the title of this thread. Or did she change the text ? Edit: Mystery solved, thanks to Google :TU: Three days ago the car was listed as a 1970 Buick Riviera in that same advertisement: