From a manufacturers point of view, would the Tin Vans share anything with any other model? The undercarriage or the ends, for example?
When it comes to the GSV's / BR Vans, I guess that they don't share anything with any Irish stock at all, do they? If not, do they share much with the BR Mk1 BCK's and BSK's that they were based on?
Would it make more sense for a manufacturer doing a run of BR Mk1 brake coaches (hint, hint, Accurascale team) to do the Irish GSV's at the same time?