According to that site the stock setting is
1.020 kg/mm
For my wieght it suggests 0.976 for street and 1.041 for racing. That would seem to put my stock spring right between the 2 (wich is what I was looking for) That just doesn't seem right. Hopefully someone with more suspension experience (paging section8..section8 there is a call for you) will post up
Thank you for the site though