Here is the mk3 versin of the J sheep wagon (pre assembly). Appart from a minor do-do with the doors, the rest looks exceptionally good. (photo by cabbage)
The holes on the ends are a nice touch, and are technically correct (photographic evidence suggests that there was no set pattern for the boards with holes and so, as with anything else on the NZR in the 5's and 60's, anything goes).
I'm looking forward to getting a train of these together and casting some sheep up for them, though it will cover up those loverly gratings.