The marauders use the same basic ecu as all other 03-04 luxury ford sedans but has a couple extra pieces of hardware in the case that no other cars have most notably the starter relay output. So unless you find a marauder specific ecu or add the hardware to another ecu u will have to bypass the starter relay pin to use most other ecus.
I'll look at my inventory when I get a chance I may have one.
I have a matched key and ecu from a 2003, for sale..
BMD0