Yes, but the enclosed instructions do not say anything about why there are two different sets of brake gear.
I think the answer may be on this website but I will have to read it a few times to get my head around it. He does mention that there are two sets of brake push rods in the Coopercraft kits so I need to sort out which are to be used. (I think it is left over right for the W1 wagons and brake push rods on one side only) :
http://www.gwr.org.uk/nowagonbrakes.html