and a turbo timer, colder plugs, and better fuel management since the greddy blue box sucks balls.
You should just go to
www.groupbuycenter.com and look on there for a revhard stage2 kit. I think they're like 2700 shipped and you'll get everything you need. Maybe not a turbo timer and boost controller. You can build a manual boost controller for like 5 bucks with Home depot parts. If you're interested let me know. Your stock radiator will work fine.
EDIT:
http://www.groupbuycenter.com/buy.aspx?id=7819 $2900 gets you everything you'll need. Good price.