63/67 valiant ( not mine )

A guy on phoenix craigslist has a 63 valiant that he says is a 67, I e-mailed him and told him it was not a 67 but a 63 and he replied that I don't know what I am talking about. I am not good on a computer so could somebody paste it here and tell the guy he is full of it . The ad number is 4857652950 he calls it cudiant ?
Thanks