The H&R OE springs seem to be a little stiffer than the Tein H-Techs, but not by much. With these springs offering such a mild drop, if his cars stock springs have "sagged" at all, there could be almost no change at all in ride height. Just not worth the money IMO.What about H&R OE springs? aren't those supposed to be stiffer but a mild .25" to .75" drop?
I think i remember hearing about at least a couple companies that made similar springs. I just don't remember which.
EDIT:
Looking for the H&R OE i found this:
http://hrsprings.com/scripts/appguide.php?Mode=Make+Guide&SubMode=Find3&MakeID=13
looks like they don't make 7th gen OE springs and seems like if the car didn't come with rear sway bar it can't be added. Of course you can't ALWAYS trust sites like this, but maybe true.
Honda uses pretty much identical subframes for all of their Civics. Except for this generation which the Si's are hatch backs and a little different. But, the rest are the same. I did see in my search that the LX model comes with a front sway bar which means there should atleast be mounting points for a swaybar for this model. I know I've seen Civics of this generation with rear swaybars at AutoX events.
Progress makes a front and rear swaybar for these cars...
http://www.progressauto.com/products/searchType/vehicleSearch/year/2004/make/Honda/model/Civic/productID/578
http://www.progressauto.com/products/searchType/vehicleSearch/year/2004/make/Honda/model/Civic/productID/410