Thanks to everyone for your help.
The car I own is a 1967 SS427 Impala converible. I have talked to the origional owner 20 years ago but have lost his name and contact info and can't recall his name. The origional owner was the Service Manager of teh Chevrolet dealer and special ordered this car. He said that this was the only SS 427 Impala conv. sold in Arizona. FYI the car is Butternut Yellow

nitrowarrior - Rudolph Chevrolet sounds a little familiar.

This is a huge long shot but does anyone have any Service Mgr's names or ideas how I might narrow my search a little more?