I have an Escort 55.. kind of similar I suppose. not as tall, though.
I use bungee cords. One long one starting from the stem, going one side of the stem, then cross the top tube and wrap aroudn the seat clamp and attach behind the rear wheel. That sounds a lot more confusing than it is.. picture a cursive L. The front wheel is turned almost 90 degrees and the rest of the bike falls pretty flush to the side wall. I keep a bin bag cut up to wrap around the chain if I am sleeping in the van.
At work, no pics available. 🙁
Trail Rat, I like the portable box/tool box as the base for a bed. Much better than building a removable sleep box. Wish I would have thought of it years ago. Are there multiple bins to disperse weight or just one heavy duty guy?