I broke the key to my 72' 3.0cs coupe, I assume they are the same type, I ask the dealer and they said it would be 3 weeks but they could order one for me. I searched the yellow pages for a key shop which makes High security keys for autos such as lexus etc.. and they made mine in about 2 hours and charged me $28 but were able to use my valet key and the broken key as a guide. Good Luck.