Killian, I am in the same boat. Front strut spring assemblies don't seem to exist for later models of the grand prix. What I will do this spring is buy all the items I want and have a local shop assemble it to the point where I can just toss it in. One advantage is I don't have to risk hurting myself with a spring compressor.
When I was struggling with this issue earlier this year my last post in this thread took a stab at the items I would need. Not sure if it's everything though:
http://www.grandprixforums.net/showthread.php?t=82790
Good luck!
