Found this while vainly trying to find a source for 1/48-1/50 scale buildings...they just aren't out there. Not a modern structure, anyway.
http://www.btsrr.com/bts8600.htm D8
http://www.btsrr.com/bts8604.htm arch 1/48 scale.
Looks like a 2U Series D8 to me....similar to the one my friend Steve has down in Kansas. He let me run it for half a day, you better believe it makes you appreciate the modern powershift machinery!
Looks like a nice kit to me...
Alan