The gap between tracks is referred to as "the 6 foot" which would be 42mm so you could get away with less given space is tight.
Having said that I'm not convinced it would look right even if technically it was.
I see they have corrected the whiskers on the 121 which makes a big difference to the appearance.
I don't really want 2 but I might be tempted to get another and sell one chassis since my old one ran well and then swap bodies for different periods. I could live with generic dark grey seats.
Thanks.
My proposed one from Par is from the final lot. I think actually I'd decided it probably had normal springs based on SVR's 68501 which is also from that batch.
I could have sworn I read somewhere (I thought on the GWR.org Toad guide) that not all AA15 had J hangers and that either the earliest or latest lot had the usual type, but I cant now find that anywhere.
Have I made that up?
Was the GWR set in use? They had some problems because they aren't slam door - you have to actually turn the handle. People arent used to it so doors got left open and last year they were withdrawn but I don't know if that's been resolved.
Similarly in the BR chocolate and cream era the Cornish Riviera was mk1s with a 2 coach ex GWR dining set and the Royal Dutchy mk1 with a Collett restaurant car (H57 I think).
Browsing your site earlier I did think a train on the way to Woodhams might be a plausible excuse, although whether they would use a 47 is another matter!