I don't know if CA does the same thing, but I think if I were to ever buy a car private party now, I would insist on going to the DMV, and filling out a duplicate title form, without change in ownership. (That's what they call it in Washington). This way, you can be sure the title is authentic, becuase the DMV will issue the title in person, on the spot. If the title the seller supplied was faked, this will be readily apparent when the DMV fetches the title info from their db. This way I can be sure that the title is authentic/valid... I'd tell the seller, no offense to them, it's for my benefit. If the title is authentic, they have nothing to worry about.