Looking to buy rims for crown vic... need info

hello... I am looking to buy some sporty rims for my 2003 Crown Victoria Police Interceptor. I had my snow tires put on the factory steel rims.

When I purchase new rims do I have to get a special offset? I heard the 03 rims are different. I would like something like the rims you see on the maurader. Any help would be great!!! thanks