Thanks guys. I emailed the owner yesterday, explained to him that I doubt the originality of the car for a variety of reasons. He hasn't responded. Before this he was responding within hours. So, I'm pretty sure he knows the real story and is just playing dumb.
1967 FB 400 4-speed A/C Tyrol Blue w/ Dark Blue 1967 GTO 400 AT A/C Gulf Turquoise w/ Black (dad's 1st car, my last car)