Hi and welcome aboard. You should be here with CCX questions.
http://www.clubcobra.com/forums/contemporary-classic-forums/
I believe they are still available and come up for sale on e-bay but are very pricey.
I would make posterboard patterns and fit them to the car. Once they're all made I would replicate them in ally. Then polish or scotchbrite to taste and install. The welded together ones I've seen are very nice but that's some serious work to put together and bench off.