I dug around online for 10 minutes after posting that but couldn't find any better descriptions. I think winging it with the maps and/or GPS would be your best bet. Or finding some guys through bc4x4.com who have done the trip before. I think they do it a few times each year, might be fun to hook up with them (be prepared for the ribbing you'll get for not owning a 'real' 4x4.)