Trim adhesion question

[turbo350]

The driver side top trim piece ( the long one ) on my '78 lwb has come completely off the box. I am planning on redoing all the stock exterior trim in a few years when I paint the truck. In the mean time what is the best alternative to sticking this trim piece back on so it doesn't come off again? I'd like to stay away from the aftermarket rivet type kits if possible. I understand 3M makes a great two sided tape for automotive use. Any advice is much appreciated.

-Rob