I made my own as quite a few have, Do a search, there are several threads that will tell you the length of bolt you will need. I bought mine at the hardware store.
You keep the back bolt in-no spacer, which will give the drive shaft the correct angle, you do need to LOOSEN that bolt a few turns to be ble to manuaver the diff around
I would have to figure out in US measurement what 10mm is to determine how long of a bolt you will need. If 3/8's then you can use the stock bolts with no problems.
2017 Deep Woods Green ZR2 CC
Truxedo Titanium cover
Go Rhino RB20 running boards