Is there much difference between 05 and 04 STi parts? I have frindes with 05 parts that I can get cheap i.e. rear sway and springs.
The rear swaybars and springs are the same 2004-2007 STI. The front swaybar design changed in 2005 on the STI. Also, the struts are different with different hub mounting as the STI hubs were changed in 2005. They can be made to work but it requires quite a bit of effort. But as I said above, I don't recommend simply putting STI springs on the stock Forester struts.