I've compiled pictures of brake master cylinders used in the mercury marauder and ford crown victoria in various stages of disassembly.
2004 Mercury Marauder 300B with traction control
http://www.p71interceptor.com/brakes...r/2004marauder
2004 Crown Victoria without traction control
http://www.p71interceptor.com/brakes...cylinder/2004/
1998 Crown Victoria with traction control
http://www.p71interceptor.com/brakes...cylinder/1998/
The ford crown victoria, mercury grand marquis, lincoln towncar, and mercury marauder all use the same master cylinders in a given model year.
In the recent ford dealership parts catalogs, the mercury marauder is even listed as a mercury grand marquis with the marauder package. The marauder used to have it's own catalog entry a couple years ago, but ford has since consolidated the entries.