https://mthtrains.com/20-3000-1
that is a proto sound engine to get anything more then you would have to change the board's from proto sound to ps 2 3 volt or put a steam kit in the engine . the kits alone are $199.00 plus install or if you join the mth premiere or reaiking for $50.00 you can then buy the kit for 169.00 plus shipping $18.00. there there would be the cost of labor unless you install it your self. if you install it yourself there would be no warranty from MTH unless an ASC tech installed for you !