Progress on GSV conversion is slow but on going. A bit of work on battery box, diesel tank and steps. Got the B5 bogie kits made up and new bogie swivel mounts made at the correct ride height. Finding this chipping away with plastic quite therapeutic.
Holes drilled for wire hand rails at guards door.
The lima bogie mount had to be drilled out and new swivel mounts added so the B5 bogies can easily snap fit in place for easy removal.
Worsley Works sides on a rtr Graham Farish or Dapol body would appear to be the best option for producing UTA/GNR coaches
Colin Flanagan has produced convincing results with rtr conversions of NCC & GNR coaches using these methods in OO
The Worsley Works N scale list does not include GNR stock at this stage http://www.worsleyworks.co.uk/2mm/2mm_Irish_Standard_Gauge.htm but Alan Doherty is likely to produce the sides if you ask him.
Finding a donor body may be a bit tricky Graham Farish appear to have dropped their older corridor and non-corridor coaches which may still be available second jhand on e-bay or exhibitions https://www.ebay.co.uk/itm/GRAHAM-FARISH-N-GAUGE-MAINLINE-COMPOSITE-COACH-GWR-BROWN-CREAM-/292327768203 j