Has anyone converted Bachmann’s Acela Express to knuckle style couplers? If so, what does it take?(Modifications, coupler make amd model etc) Thanks.
No and why would you want to?
The real one uses drawbars not couplers and the Acela is a set - it doesn’t couple with anything else unless its getting towed.
The only knuckles on an Acela are in the nose of the power units.