This is the best illustrated parts manual Jensen ever did, in my humble opinion.  The drawings are very, very good.  If you have a Mk2 Interceptor or Mk2 FF this would be for you.  More expensive than the others but it has so many more pages.  Comes to you in a hard binder ready for the work shop shelf.  So put your original away for safe keeping and get your grubbies on this one!