Got the snazzy new (well, used) 'Scenic Drives - Montana' book in late last week. It's not quite what I was expecting though. I got some information that it would be good for off-pavement trails. The book shows some... but not nearly what I had expected. Thus far, I've gotten better information from the forums that I visit in terms of places to check out.
Definite locations so far will be the road to Polebridge (again), and the road up to Kintla Lake. Kintla Lake has some good backcountry camping, and it's isn't very far from the Canada border. Maybe we can make a side trip there, if time allows.