Gordon,
You are definately a man with snow machine issues,(M-H Sno-Go, Tucker Sno-Cat, T-36 Snow Tractor, numerous ski trailers, ect)!
Great to have something to spring you out of bed in the morning, and that rare vehicle is as good a reason as any.
Hope the project goes smoothly for you.
Have one good window surround here that you can have, so if you find another you'll have a set......
Regards, David