(10 Apr 2017, 5:48 pm)Andreos1 wrote Tyresmoke did a 'running board' for a number of units a while back - think it is in this thread. It may be out of date, but it gives a good idea.
It's on page 8 of this thread if anyone is interested
RE: Northern (Arriva Rail North)
It's on page 8 of this thread if anyone is interested