Those that were converted to buffets, i.e. 61495, 61496 & 61457 were branded 'Buffet' otherwise they were branded 'Restaurant Car', except for those that were converted to cafeteria cars.
The corridor widows beside the the kitchen were clear, at least just after nationalisation. As far as I can see all GE coaches were built with 8' plate bogies, though some acquired Fox's after the grouping.