Mr. D.Postmus appears to have purchased this gearbox which had been for sale elsewhere; and is now seeking to resell it (i.e. flip it).
It is a "rebuilt" ZF 5-DS-25/2 gearbox for sale for $7,000. It doesn't surprise me that he would advertise on our forums. Some members may find this of interest; I usually encourage "parts for sale" that may help a member; thus I see no reason why he shouldn't list it on our forums.
However, if I were considering a purchase, I would first seek clarification if this gearbox is ready to run in "Pantera configuration" or in "GT40 configuration". One configuration is 180 degrees opposite of the other configuration.
Please show Mr. Postmus the same respect you would expect if you were selling parts on our forums. However, as most of you know, I am not "all-knowing". So if there are other issues please contact me via private message.