Gordon, I'm not in the fiberglass business, so I don't have any idea what it would cost to have them made up from my molds. If you aren't in a hurry, I could probably deliver them to a guy who does FG here in Missouri and find out. The molds are for the "skins" only. You would still need to do something for underside stiffening.
If you have found another source for the pieces, you should probably pursue it. I'm not really set up to produce the parts, but am happy to help if you run out of options!
'66 GTV racecar, '71 Spider racecar, '74 GTV street car, '71 GTV project