Well, I'm off and running. Yesterday morning I made cardboard patterns for the kick panels. Tonight I made cardboard patterns for the doors. Today when I had to go down street, I stopped at the Audio Shop, and determined that I can mount a 6" diameter speaker in my door panel, and the magnet on the back side will clear the inside of the metal door skin by about 5/8". (this is great, because when I built the glass 27 roadster 10 years ago, I had to put a spacer ring about 3/4' thick on the outside side of the door panel to get clearance for the speaker magnet, and the speaker cover always interfered with my left knee) My upholstery guy says "do not use the plastic christmas tree type fastners on a steel car"---the sharp edges of the drilled holes in the steel door will quickly destroy the plastic". He recomends Chrysler panel clips---they are a steel wire type thing, (which I haven't seen yet). I am still undecided as to what material I will use for the panels. The 1/8" mahogany door skins that I have always used are relatively cheap, easy to work with, and it won't hurt if they get a bit wet---(the marine vinyl upholstery is waterproof anyways, so it keeps the wood dry).