keep checking the for sale section of this forum, you'll eventually find something that works for you
eibach pro kit springs will drop you around 1.6" in front and 1.4" in back
you can find these pretty cheap, but lowering your car will also add to wearing your shocks out faster, your also gonna wanna check your rear camber, you may need to get a rear camber kit to straighten out those back wheels
if your numbers are -2 or less (-1 to -2) you are good, anything more than -2 and your gonna wear your tires out faster than you'd like
Just like stated above, lowering springs will diminish your stock shocks life span, no telling when, for some they blow a shock rather quickly for others, they've had a lowering springs/ stock shocks for more than a couple years with no problem. Its really a hit or miss, but since you have an '04 I would assume the shocks have high mileage which is significant factor to this equation. I'm dropped on S. Techs with stock shocks and the ride is decent, no problems yet.