1. Legacy F40 and Cabbage re-run
2. Legacy Hudsons w/whistle steam that aren't New York Central. So much to choose from. ATSF 3460s would get orders, as would New Haven I5 Shoreliners and Milwaukee F7s. Wabash P1s and Lackawanna M1s could be a surprise success.
3. Legacy Santa Fe 3400 class heavy Pacifics w/whistle steam, based on their later appearance as rebuilt with disc drivers (see ATSF 3415)