I don't believe that there's anything specific to what you're looking for. If it's a budget consideration and you want the car lower but can't fork over the $$ for shocks at the same time it's really not a problem doing them a couple of months apart. That's what I did. In fact, I really didn't think the ride quality had suffered all that much initially after doing the same drop you're considering. After a month or so, however, I was getting annoyed at the bouncing in the rear end. I had a set of Tokicos put on and it really did make all the difference in the world!
Now, I put on shocks/struts at a price of $265 plus $110 installation. You could buy just the rear shocks and have those put on at the same time as the springs. The part number for the rears is HE2950, fronts are HB3195. You can get the rears at
http://www.splittingimagez.com/tokicogasshocks.htm for $37.67 each.