Bilstein coil-over spring diameter?

[kiwivw]

Hi all,

I'm just working out some dimensions for a 944 trailing/915 transmission install and i want to move the trans as far forward as possible (without too much angle on the cv/axles), but it looks close as far as the coil-overs and the axles.

Since i haven't purchased the bilstein coil-overs yet (read waiting for $$$) does someone have the outside diameter of the coilover springs handy somewhere?

So i can mock up some dimensions.