if your lowering it more than 1.5":
replace your swaybar endlinks with shorter ones (maximum motorsports sells them)
i also suggest replacing yourpinion snubber above your rear differencial (maximum motorsports sells a very nice one. more budget friendly ones consist of BBK)
and finally your caster camber plates. you need plates that offer more adjustment than OEM. Maximum Motorsports is the only kit i suggest for CC Plates.
Finally, while everything is open and apart, i'd look at your ball joints. replace them as needed, or replace the entire A-Arm....
Prothyne offers an entire suspension bushing kit, it even comes with extra bushings! LOL. thats what i purchased when i did my suspension work.
finally, completely *optional* equipment would be:
beefier sway bars (maximum motorsports sell eibach kits)
lower control arms (maximum motorsports sells all sorts of car-specific options for rear control arms)
rear quad shocks (if they compress/decompress really easily, they are blown. they should show resistance in and out.)
steeda rear shock-tower brace.
sub frame connectors (only buy full length, weld in units. maximum motorsports offers powder coated and bare units.)
strut tower brace (OEM unit is fine, maximum motorsports offers a nice selection of differet styles.)