Dora 9 bomb loads?

[stugumby]

http://www.clubhyper.com/reference/f...dinggear_1.htm
in this link that was posted in the landing gear lock thread there is a photo 8 that shows a D-9 with small bomb racks under each wing. So my question is, was this a standard feature and just not modelled in game or as a D-9 may be a cobbled up airframe using existing A-8 wing parts etc, is it a one off/field mod. My current understanding is that the plane can have a bomb only on the center line rack. And also can some one reccommend a decently priced FW book that cover pretty much all types.