Ashtabula Carson & Jefferson RR

[lajry]

Modeling LAJ Ry & ATSF ALCO S-2 & S-4 ALCOs noticed their stacks were not the stock ones that come w/ other ALCO switchers. Likewise the ACJ S-2 is not stock. Did they put their own stacks on or did that S-2 some from another RR? Ditto the whistle is not stock ALCO. Do you know what kind it is?