I've tried the castle nut on the upper arm and it doesn't fit.
The wrench was an 19 and it looks like the castle nut is 18? (Exactly 17.5)
https://www.deloreango.com/fr/castle-nu ... r-set.html
So, I won't be able to use it. On the other hand, I think the pin will fit under the nut?
Otherwise, I will need another upper ball like this one,
https://www.deloreango.com/fr/delorean- ... joint.html
This afternoon, I disassemble the driver's side