Never seen any W71's as loggers but anything is a go.I found one B71 in Quesnel, BC with forward radiator. That‘s the only one I have seen so yes it it pretty seldom. But how about a W71 as logger and only 215 were build…
I worked on a 250ft. flare stack and it was bloody long when set up horizontally in the yard. I'd guess that tree isn't much shorter.