C&O Class J-5 4-4-4-4 Duplex
and J-4b Streamlined 4-8-6

In 1946, the C&O tested a pair of PRR class T1 duplex passenger locomotives.  The big machines proved to be too slippery for passenger service on the C&O's mountain grades, but what if......

 

In the end, perhaps they were less successful than hoped.  Would they have been rebuilt into the class J-4b 4-8-6, similar to the existing J-4 and J-4a?