Looking for grandfather’s 911s

I know this is a super long shot but I am looking for a couple of 911’s my grandfather owned in the Jacksonville Florida area during the 60’s and 70’s. One was a ‘66, originally a grey car with VIN 304602. I believe he got rid of this one around 73 or 74 when he purchased a 73 911T. I do not have the VIN for the 73 but it was originally a green car that was Repainted in a Silver Rolls Royce Lacquer. I believe that car was sold around ‘82. He sold it to someone who worked for him previously at one of his shops. The story I was given is that the guy who bought it had a stroke and got rid of the car. Supposedly the car was at a shop in Georgia for some time possibly in or near Atlanta. I have a photo of the 73 when it was in Silver. If any info Is out there it would be greatly appreciated.