The rating in the licence is B757/767.The conversion course was for the 757 only and if you fly the 767 you do a differences course.It is the same with the Airbus family as well A300 also gets you A310,and A320 gets you A318-A321.A manual for the real Honneywell fmc can be bought from here:
http://www.afeonline.com/shop/index.php?cPath=38_295 and it covers almost all the Boeings.
I also have the checkride guide and can recommend it.