Digital BW, The Print

Hello,

I'm getting ready to buy a set of ultratone inks and will be sharing a set 
of bottles with someone else.  I have an 1160 and he has a 1280.  Does 
anyone know if the C, M, Y positions are the same ink for both of these 
printers?  I was just going to buy a Hex set of bottles but want to make 
sure I can use the C, M, Y inks for the 1160.

Thanks for your help.

Heath