TimoTS , I know you have had a shock recently so will try to be as kind as possible.
You are making thread after thread, basically asking questions that firstly have already been answered by site members, myself included. If you don't understand the responses, try asking again, in the same thread. It makes life easier for everyone involved.
Secondly, all information about manufacturers for Range Rover engines, from Classic to L405, can be found on the link I previously gave you
Due to your recent shock I will not make the most obvious comment, but instead wish you well and hope that your family is ok