I'm not sure what adhesive John uses. It is in a spray can and it is 3M, but they make a lot of different spray adhesives. I can find out. Something he did before he sprayed on the glue was to clean the fiberglass really well and spray it with a black lacquer primer. He said if he did not do that, the glue will not stick well. I watched him install several of the pieces of the Dynamat, and he only used a small amount of glue, and it held very well. I am only assuming he will use the same glue to install the carpet to the Dynamat as well. If he uses something different I will let you know.
As far as the center console question, I planned on getting a new center console for the '68 to accommodate a CD stereo. What exactly are you painting, the exterior or the inside or the gauge areas? For my '65, there is a light green paint that goes behind the gauges to enhance the lighting of the gauges. Not sure if the C3 uses this paint or not.