
The old-style livery would maybe be easier as it's light blue with the cream/beige, instead of the red on your WIP screenshot.

That's a T4 not a T3. T3 are wider than the T4. The model of this is T4YU. You have also T4D. D stands for: Deutschland, YU idk.
I wish they had a sketchup of this tram.
https://en.wikipedia.org/wiki/Tatra_T3
Aaaah The good old Tatra KT8D5, the only bidirectional tram in Prague. It's very indispensable during tramworks when tram can't reach returning loop and has to change direction.