I made myself the Tram Tatra T6B5, it is not absolutely copy, and it have trolley pole (not pantograph) that pole use in my city - Riga.
Screenshots:
1 http://antari-kun.net/tram/TatraT6B5S1.jpg - Air View
2 http://antari-kun.net/tram/TatraT6B5roof.jpg - Roof View
3 http://antari-kun.net/tram/TatraT6B5stopview.jpg - View from Stop
4 http://antari-kun.net/tram/TatraT6B5back.jpg - Back View
5 http://antari-kun.net/tram/TatraT6B5pole.jpg - A trolley pole
This tram i take from original Latvian Tatra T6B5 with Trolley pole : http://www.strassenbahnen-online.de/tatra/t6b5/fotos/original/riga223_1.jpg
What do you think? ^^*** If you like it, i can share you this prefab