If you haven't already found it, there's a great intro to the Monaco police cars here: http://www.allpar.com/squads/dodge-monaco.html
Specific make and model match is tricky, since the kit is a conglomeration of features, resulting from the kit having been modified several times over its long life. It currently most closely resembles the redesigned "standard" '77 Monaco in terms of body style and front grill. The kit has non-standard deep racing-type wheels and tires as well as non-police style "sport" side mirrors.
If you do a search for "77 Monaco police cars," you should get some ideas---though quite a few of the photos that come up are movie/TV versions like the DOH cars. There are several neat pics of what look like restored (or "replica") California Highway Patrol black & whites. (Example here.)
The earlier 70s style Monacos are probably most famous for their use in the first Blues Brothers film. Partly as a nod to that, and partly because I grew up in Chicago in that era, I did a "sort-of" version as a regular CPD cruiser using a mix of Fred Cady and home-made decals. (The real CPD Monacos--and they used quite a few of them--were the pre-1977 style.) I basically built the kit stock (racing wheels and sport mirrors unchanged), but scratchbuilt a more appropriate Mars Skybolt lightbar. A few pics:
One of the simplest OOB fixes, which somehow didn't occur to me at the time, would be to insert spacers in the wheels to bring the hubs out flush with the rims. That way, at least at first glance, the wheels wouldn't appear so odd on a cruiser.
While I was building mine, I happened across the original 1977 Monaco Police car brochure online. If you're interested, I can probably either find the link, or shoot you copies of the files.