Yes, but if you are unable to source a suitable gearbox, then you have to consider what alternatives are available to you.

Don't think that only a TS3 gearbox will do, although that would be easier to install.

You're right ....I probably need to start searching for some lorry graveyards over here in Belgium ....see what I run into

Yes, once you get talking to some of these scrappies they might be able to tell you where you might find what you are looking for.

Let's hope so hahaha