I am using some lengthened Range Rover rear lower trailing arms in a coil conversion for my Zook. I'm picking up the arms nex week but need to order some brackets for them this week. How wide do I need to order the mounts?

Where they attach to the diff -60mm inside of bracket ,to inside .Allow 30mm from bolt hole centre to the diff or rear of bracket .
At the chassis ,allow for at least 120mm ,to mount the bush .

HTH.