93 LX Notch Help

[Screech]

I bought a 93 LX Notch a while back from a friend of mine. The story is that it was originally a police interceptor. It has holes in the roof dashboard and trunk that look like antenna holes and the car was painted black and white so i guess its true. Anyway the car has been modified by the 2nd owner. The 3rd owner the guy i bought it from told me what he could remember. Things ive been told modified on engine: 24lb injectors, eldebrock intake, bbk 70mm throttlebody and spacer, cam, lifters?, long headers, aluminum radiator, aluminum driveshaft, 4wheel disk conversion, axle and 3.73 gears, sub frame connectors, strut tower piece, king cobra clutch, new shifter. There is more but i cant remember. He said when it was all put together the car's fastest track time was 11.6 without nitrous. Its pretty damn fast but i havent ran it to hard because i dunno its limits and it sat a while, plus 2nd gear is worn out pretty bad. Anyway i forgot my point, brought it home for 3k, most people said i was dumb since the paint is down right ugly but its whats on the inside that counts i say. My point how do i know for sure if it was a police interceptor, what is a good way to find out what parts are installed, i can turn a wrench well but im not the most knowledgable about my car yet. Thanks for reading hehe