Coincidentally, I was just about to start a thread on this because I couldn't find any info line (Didn't find the Chevelle thread). Anyway, here are few pics and my way of doing it.
I used "3m Fast Tack Trim Adhesive" (PY has it as a woodgrain dash insert adhesive) as I was advised by the tech at Legendary not to use any type of spray adhesive. Not strong enough. The 3m has worked very well for me holding the board while I rivet and also, more importantly, holding the covering in place when it's pulled tight.
As for Rivets, I used not pop rivets but more of a 'buck rivet' used on leather belts and purses. You just drill the hole and stick one end through. Put the bucking end on the other side and give it a whack with a small hammer. I did not trust pop rivets to hold in the 'cardboard' door panel.
I was also told by the Legendary rep NOT to attempt to glue the covering or the underlying felt down all over, JUST the PERIMETER.
He said that it should be a 'floating' arrangement. When I pulled my originals off, this was just the case. Glued along the perimeter of the metal only.
Heres a link to the Rivets I used-
http://www.ebay.com/itm/261566656449...#ht_1329wt_943
Adhesive-
Some photos-
This is the rear quarter for an example. The metal has been separated from the original backing and cleaned of excessive rust etc.
The panel has been glued to the upper metal and rivets inserted and bucked into place.