These are the seats that we use in our other kits, but offered individually so they can be used for your own builds.
 
Coach 'Soft'
Coach 'Hard'
Size for above:-
H = 50mm
L = 95mm
D = 30mm
Top of seat from floor = 24mm
 
Railbus 'Standard'
Railbus 'narrow'
(Sizes and pic to follow)