Anyone know which coupler fits? I'm thinking a 2004 on the tender ason other Bachmann tenders but how about the pilot? It appears like Backmann got their boxing glove coupler to fit.
Have you looked at http://www.micro-trains.com/conversions/sheet003.pdf ? It doesn't list a 4-6-0 but you may be able to extrapolate from other data there.
The tender has an MTL compatible coupler. Why would one wish to modify the standard pilot coupler which will also couple with MTL? I have two of these locomotives and cannot envision running two in tandem.