Fairlight-CMI

Hello everybody,

I have one question, maybe someone can quickly reply (because time is 
running out):

In my IIx are two YD-180 drives installed. One of them has reading problems.

Tony has slaughtered his CMI and put his drives on ebay as we all know.

My question is: Can I combine one working YD-174 and one YD-180 to 
make a complete running system, or is there any significant 
difference between them that would make it impossible or difficult ?

Thanks for any help

Roland