To my knowledge, factual information is not copyrightable; only the particular presentation of that information can be subject to copyright.
Note, however, that you may want to make clear that your site is not affiliated with nor approved by the Ford Company in any manner. And since specifications may be regarded as being proprietary information, you may want to run this whole project past your solicitor.
We are users, just like you. We are not lawyers or qualified counsellors. For legal advice, pay a professional.