wjstix posted:IIRC, didn't the D&RGW have some engines that were original built as standard gauge, but were converted to 3' gauge by making them outside frame engines?
Thoses are the K-37 class 2-8-2's. They started life as standard gauge C-41 2-8-0's, and were rebuilt in the Burnham shops using new frames. The original tenders were reused, and the wheels on the tender trucks were regauged by moving the wheels inboard on their axles.
Stuart