I am going to lower my Z once i get my rims i plan on putting 19's and go no lower than 1" any tips on what springs i should use? i was thinking eibach, and is there anything else that i should change along with the lowering i dont want to do a half *** job

 

You could go with fully adjustable coilovers (and spend $1500-2000) or go with the Eibach's. Seems like most everyone on this board who's changed has gone with Eibach's. H&R also makes springs, but the drop is much more (at least 1.5", if I remember correctly). A 1" drop will be plenty with 19's. Check around, other people with 19's have dropped their Z's with the Eibach's

 

If you have the money go with some badass Tein's. You wont ever regret it. My cousin has some and they are pretty damn sweet, improves handling dramatically.