To clarify, are you asking for a way to essentially mount your bike on top of the bed sides?
If that is the case, why not get use some bolts and washers to run a 2x4 or 2x6 up the length of your bed rails then use fork mounts and a velcro strap for the rear wheel?
Of course, I would be concerned that such a set up would not be particularly stable and could fall over. A cross beam or two would help add stability.
Last edited by topflightpro; 08-24-21 at 09:31 AM.