The -73 is listed as a short nose model on the Wiki entry. Look on the list for a model used in other aircraft and check the ones available. Many of the different models were due to internal mods which can't be seen. Wiki and Google Images, or others, is your friend.
WIP: Monogram 1/72 B-26 (Snaptite) as 73rd BS B-26, 40-1408, torpedo bomber attempt on Ryujo
Monogram 1/72 B-26 (Snaptite) as 22nd BG B-26, 7-Mile Drome, New Guinea
Minicraft 1/72 B-24D as LB-30, AL-613, "Tough Boy", 28th Composite Group