4 is the only difference I know of :laugh: I dont there there is any difference. maybe scuba steve or someone who knows suspension better could chime in with something more meaningful then my smart ass remark. lol
how about these? http://www.mnsubaru.com/forums/showthread.php?t=29882 otherwise yes I do also have stock 00RS springs as well $80 obo. Let me know.
This is probably wrong since no one else has mentioned it yet, but... 04+ wrx rear have a taper so they need a different rear tophat. (So I thought.)