Yes, I think this is fibre glass ghost or stealth hull, I think it was produced some time after the demise of the Robbe Sar33. The ghost uses the same KMB hydro jets as the Sar33, but it's shown with the upgraded reversing buckets.
The early Sar33 I have needs a lot of work due to the previous owner using it in sea water. So I added the upgraded reversing buckets and added a pair of Aquastar 1700kv brushless motors to give it a little bit extra.
The ghost doesn't come cheap either, I'm not sure what the post is for it either. That's if you can get them to send it to the uk.
After three attempts I finally got to import the late original version of Sar33 from Germany, the original owner was very reluctant, He wrapped it very well but it still came broken. You can still buy original parts on the water jets and some of the boat fittings are standard and available.