For the bike to fit fully enclosed inside the truck, both wheels have to come off. Monday I configured the front end, and this afternoon I came back to configure the back end. It required a tower that would hold the frame at the same height as the wheel to keep the front chain ring floating (about 1/4″ clearance). The tower needs to be removable, so we can transport the bike in its Monday configuration of rear wheel on / front off and back of truck open.
The instant release bracket is made for a narrow front fork, so I headed out to the nut & bolt supply shop. The pin needed an extender/connector, and it is a metric #9, which doesn’t even exist on the bolt sizing guide, much less in reality- of course. But whatever, I made it work.