Is there any Ford Crown Victoria LX Sport on taxi and police fleets?

don't think so most taxi's are old police cars. and most police buy the cheaper one.

I doubt it. The company I work for installs all the toys in a variety of police cars and over 90%of them are Crown Vic's police interceptor editions with factory installed modifications. These mods include NO carpets, bucket seats, heavy duty hoses and clamps. The co. I work for installs all the other goodies.

no it is just a crown vic for taxis and a modified version for law enforcement

There isn't really as "Sport' model of the Crown Vic. Police and Taxis are modified for higher performance and more demanding use. However, the Marauder version of the Grand Marquis is rather sporty and also has some performance mods from the factory.