Hi JayG,
no, there are a lot more differences. Part numbers and parts are completely different - not only springs.
Think the easiest way is if you compare yourself. Check main group 4 - front axle and Mein Group 5 - rear axle.
986 USA parts catalogue (in english):
http://www.porsche.com/all/media/pdf/originalparts/usa/986_USA_KATALOG.pdf
986 ROW parts catalogue (in german):
http://www.porsche.com/all/media/pdf/originalparts/de/D_986_KATALOG.pdf
Sorry, i don't have a source for a ROW catalog in english. But chapters and structure are the same.
Regards
Markus