Different Master Case Quantities

SOLVED

Hello, 

I have a situation where we need to be able to sell the same product with different master pack outs to different customers.  For example, I may produce product A which has 72 eaches in a case, but I also produce product A to have 4 eaches in a case that is only sold to Customer B.  We produce and stock everything in eaches, but I can't seem to figure out how to stock, pick, and ship the alternate pack items to those specific customers.  Does anyone have any ideas?