I got another email from the seller:

Hello Lance,
Just wanted to let you know that I received a notarized statement from the original owner testing to the fact that the miles on the odometer are true and correct! I hope this will let you sleep well tonight, knowing that I am not a liar and a thief on this auction. I know I will not loose any over this matter, cause I would not try to sell something that was not the real McCoy. As soon as I found out about this, I look into it to verify what the fact were, had I found that it was true and the miles were wrong, I would have CLOSED the sale down! But the facts did not support it! So let the sale go on!!!
Thanks
Charles

I am still skeptical about his claims. The only thing that would convince me is I would like to see the speedometer to see if the screws still have their seals on them. Even then, it could still be a different speedo than the origional.