No G-bodies had that stuff in 1987. Refer to my comments over in the turbo lounge about the same car. Like I said, unless the guy has some paperwork to back up his claims than its just another TR used by a police dept.
Here are some pictures of a real G-body cop car. Notice the spartan,but functional interior complete with rubber floor cover and that red heater hose on the engine is some of the specialized police equipment that 323 is talking about.