Hi Henrik and Michael,
Thanks for your feed back and link to Gwyn Lewis.
Question is solved more or less. As mentioned above I measured from the hub center and up to the plastic wheel arch (more easy to measure that way) and then managed to get the corresponding height value from a ”new” Defender without lift. Difference approximately 5 mm. Happy with result I looked around for new 2″ shocks. I will measure the Lewis way as well.
Already familiar with Gwyn Lewis hard core stuff I ended up with his OME shocks, HD turrets, retainers etc. What a difference!
Thanks Michael for mentioning your HD springs. Even though the springs on the driver side are sagging a bit I leave that for a the time being.