Back for some more progress on this one.
Yes, his is a Tamiya model, released in 1995. It took me about two years to find it.
I found it in a Singapore on-line shop and this was the last one.
Stage one of the engine is done, and the wheels and suspensions connected to the chassis. As bigfrit was telling, this model has a simple but full working suspension.
Body will rest some more days before working on the panel lines so it’s time to start working on the interior.