I found good technical drawings of the SJ (A2, AB3, ABS5, B1, B5, BS5, WL1, WL5) passenger coach. Maybe some modder wants to give it a try?
There is some information about the wagon in Swedish on this site SJ A2 info with pictures and some facts.
I think it is a very interesting wagon type and very different to already existing wagons in TF due to the grooved side walls.
Drawing with some more details:
[Blockierte Grafik: http://www.mjhobby.se/r/produkter/nmj/Bilder/nmj_202101@_85.jpg]
Drawing with less detail but dimensions:
[Blockierte Grafik: http://www.jarnvag.net/images/bild/vagnguide/ritningar/A2.gif]
I hope this is helpful for somebody.
There is also a mail car that seems to be build of the same model.
[Blockierte Grafik: http://i1224.photobucket.com/albums/ee374/lokforare/DFo28.jpg]