Sunset/3rd Rail offered B&M Berks, Berks Santa Fe bought from B&M, and SP Berks bought from B&M a few years back. A well done great running engine. No die cast compromises.
I talked to the K-Line rep years ago about a version they could have made for the Santa Fe that had a top mounted Elesco Feedwater heater. He said they modified the mold and it could no longer be done. I wish I had talked to them sooner.