rdamon
Do most of them get converted to run short hood forward when they get new owners?
I'm not sure I understand your question.
To my knowledge, most high-hood units were set up to run short hood forward when they were built. Southern Railway was an exception (and there must have been others) in that they ordered their engines configured long hood forward; I assume this was for added crew protection in a collision. I was always a big SOU fan, but I've always preferred engines running short hood forward, and that goes back to long before low hoods even existed.
(As far as I know, NS no longer prefers to run long hood forward.)
To me, a low-hood unit leading a train long hood forward is very unattractive. Just don't look right.