Reply To: Headliner
Good question. I put mine in a few weeks ago and used contact cement, but if you are worried about future changes/improvements, then I think you could definitely use a less permanent adhesive.
My gut says that a quality double sided tape could be a good solution. I found that once you start getting pieces in place, they kind of hold each other in. Worst case scenario is you try that way and someday a few panels fall down. Not a bad problem to have.
Another benefit is that if certain panels of the foam get damaged (I noticed that the CLC model has some big gouges) then you could replace single panels.