I have a farely new audio system i bought to put in my car and now i want a new

[britt4life718]

car......? can i take my in-deck, my two front speakers and my two rear speakers, my amp, and my sub out (since i did buy them myself) and put them into my new car????? (by the way the circuit city guy who installed my stuff didnt give me back the factory stuff.. if that helps any)