Spanjaard
and those that you found are nozzle and cover in one, so you will still need to remove the existing ones.
aero-spezial-modellb..10-engine::8359.html
see another photo of the same set

Enrico Lodesani
I thought I will buy this set and that I should not do too much damage by removing the nozzles. Excellent solution Spanjaard 🙂