First off, the only available N&W whistles that I know of are 2 N&W Hooters, which are available at TCR (click on my sig for link). Second, to change whistles, copy the kuid of the horn you want, open up the locomotive for edit in explorer (do this in cmp), open up the locomotive's config file, and replace the old horn kuid with the new one next to "hornsound". Then at the bottom where it says "kuid table", replace the same kuid with the new kuid of the hornsound. Save, close, exit out of explorer then commit the locomotive in cmp.
Robby :wave: