Differing rivet patterns: mostly allowed for.
The removal of the brass beading: the splasher
fronts and tops and the coupling rod splasher fronts and tops are produced with
and without beading.
The fitting of top feed to the B4 boilers: two
different boiler wrappers are provided.
Differences in the cab front: two are provided, one
with large spectacles and one with smaller spectacles.
Differences in the cab roof: both the early canvas
covered wooden type and the later steel type are included.
The kit also includes a complete set of cabside numerals so
that any member of the class may be constructed.