Assuming your still on stock turbos, put on the 2.5 dp's and tp's then get the dual pops and intercoolers. BUT another option to intercoolers would be water/meth injection kit instead of intercoolers. Dollar per horse power wise this makes more sense to me and thats why Im doing it. Other benefits are engine cooling and internals cleaning, running more boost, and its much cheaper than race gas. Check out Devilsown.com and labontemotorsports.com
Oh and read the forums on Devilsown; there is alot of info there.