Carl, most of it is scratch built.
List of scratch items:
The smokebox and smokebox door
The head lamp
The water tank
The front beams and back beams
The cabin platform
The cabin
The hand grabs and side steps
The rear coal bunker
The smokebox pedestal
The ash pan
The (soon to be) rear wheel assembly (not the wheels)
The rear beam and split coupler
The head banjo fitting
The oiler
The backhead detail
The steam chest pressure valve assembly
The rest are parts I bought and what was left over my accucraft Ruby that I deemed okay.