i got king springs and Koni shocks,nothing too fancy.Also while your there,change all the bushes.
i've gone the rb25turbo($400) like alot of people on here,i think std the best you'll get is about 180rwkw before you highflow($800-$2000) it then will net your 200rwkw mark.
Or get a new turbo from garret or hks or whatever.$$$$
Theres a group buy on here for all suspension components aswell,check it out.