There is no one book that has the listing of all the crews assigned to the 463rd BG. That is truly something I wish I had. I do have some rosters but even they are incomplete (and sometimes inaccurate).
The make-up of individual crews sometimes changed from mission to mission, depending upon several factors, with substitutions for the sick/wounded or necessitated by special requirements for the mission.
I do have a few listings of replacement crews as they arrived in Italy but very, very few.
Maybe someday I will have the time to go through all the records I have and pull out all the rosters, crew lists, etc. and pull them together. Maybe after I retire????