Hello all .....Standard Gauge Berkshires are a bit thin on the ground .....but there is one ...Bob Hendrich ( of Goldstar GG1 fame) built up a Berkshire using a Randall Hudson body .....looks very good in my opinion , Bob was a very talented builder ...check out the Berk in action last year at Trainfest
https://www.youtube.com/watch?v=8kIDMq8e2TY
Cheers Carey