At the very least, right now active EMUs are on 569, 570, 571(?), 572, 576 and 577. I don't know whether 573, 574 and 575 have the active EMUs installed, because not so long ago 574/575 were already put near the depot's fence, and I always fail to catch 573, so I know nothing about it :D But before the 8** series were put out of service, I didn't see that 569 and 577 had the active EMU, so it is entirely possible that some EMUs from 8** series were transfered to 5** series.