I was able to use the turn-round/layover at Kildare to capture some details of these units.

Here us some roof detail on DMSO 29104.

I was also able to walk along photographing the underfloor equipment detail on all 4 cars on one side. Next time I will endeavour to get them broadside on but here I was unable to get back far enough even with the lens at its widest angle. If the underfloor equipment is identical on all four cars - its looks as if it might be - then I have captured both sides of a car twice.