Hi Alex
Perhaps this can help you out : https://www.mylespaul.com/threads/npd-dry-z.320041/
I like those aged covers : https://www.crazyparts.de/area59-parts-for-gibson/hardware-aged/area59-vintage-paf-cover-version-i-nickel-aged.php
https://www.crazyparts.de/area59-parts-for-gibson/hardware-aged/area59-vintage-paf-cover-version-ii-nickel-aged.php
I would under any circumstances contact the shop and ask for detailled instructions how to measure and where. Spacing between my EGF 1200 and my OBG is different. OBG has Kloppmann pickups instead of Gibson 57 classics though...
Cheers, Timo