can 561 and 550 share hands and case?

I’m trying to buy a 550 parts (case and hands) as a donor watch to my cal 561 with piepan dial. is it reasonable?

 

Hands : yes.
Case : yes and no.

A 561 ref 168.004, a 561 ref 168.005 or a 561 ref 14393 are not interchangeable because dial sizes are different.
Hope you understand what I mean.