S60R/V70R Rear Shock Spring dimensions

All,

Can someone take & post the original rear shock absorber's spring bottom dimensions?
Volvo Coil Spring - Genuine Volvo 30639016

What I would need:

• Bottom Inner diameter (cm/mm):
• Bottom Outer diameter (cm/mm):

I sold my R, however try to help fellow members to convert/replace the Monroe C1501 rear shock over to a Bilstein B6.
The new B6 shock would require a spring plate to be installed which can be supplied by Bilstein, however they would need the above spring dimensions to be able to supply the proper spring plate.

Thanks in advance!

htomi