I say yes. The '04 calibration with the larger injectors will give you the 230hp (2004 rating) instead of the 215hp (2003 rating). Also, the '04 calibration was supposed to give some minor driveability improvements.
If you are not going to change your down pipe or WOT.. This mod is awesome.. The Mopar BOV is short like a S1 PCM, not that long drawn out 10 second blow off..