Too late for those trucks...
No one has even made a model of an EMD SD38 in O-gauge. Personally, I could care less if they never do.
I would much rather own and operate a nice, accurate model of a RDG T-1. :D
One other thing, before I forget. ATLAS O will be making RBMN SW-8s in O-gauge. It is in their latest catalog.
:D You can look it up at www.AtlasO.com
Take care fellas,
READING LINES "BEE LINE SERVICE"