Indeed that VIN would go in brackets. It could be interesting to mention it on the site, but it would be lots of work for both you and me to add it to all the current ones if you post a comment on each of them.
For the future identifications, it costs nothing to mention the code at the same time that you mention the year or a "police interceptor" info, so do not hesitate to include that.
For existing cars, I could automatically add P74 to the LX. For the others, when I have some time I could go through all of these and add the code depending on what is seen on the picture.