This is great to see, innovation and alternative ways of doing things, keep us up to date on this benv. I have a couple of targa roof openings to fill in on the Z31, present plan is to make composite panels off the targa glass panels and then bond them into place. Problem with those adhesives you mention is that they require expensive applicators, I'm wondering if the adhesive used to lock bolts into concrete floors could be used, an ordinary caulking gun is all that is required with them.
And Lurch, be helpful and show us how you would fit a floor using the technology benv has used.