Molex also has an alternative that seems to work, however, they are not cheap:
http://dkc3.digikey.com/PDF/T041/0103.pdf that’s the whole page, but the "Mini-Fit Sr. Terminals" and the "Mini-Fit Sr. Connectors" are what I am referring to. The Connectors have a max of 6 pins which would be 3 motors per block and a current rating of 50 amps. Good Luck.