MTH offered the Premier version of the Bush Funeral train in components. The site link is:
https://mthtrains.com/premier/spotlight/07_2019/e
In Rail King, it was also offered in components at:
https://mthtrains.com/railking/spotlight/07_2019/a
Lionel offered it as a set:
https://www.lionel.com/product...al-train-set-2022050
Technically, the funeral train was an assemblage of business cars pulled by UP4141 and UP4096 with the door removed from the "American Flag" baggage car. There's a list of the actual cars out there somewhere.