If the photo does actually date to 1966, then the car would most likely be CSX2430 (before they added the chin scoop, flared the front fenders, and painted it red to go racing)
The early halibrand kidney bean wheels, the hood scoop, and the roll bar suggest that this car was a pre-64 competition model 289 (no cutback doors, and no chin scoop):
Now, Tom Payne also owned CSX2009 a few years before he owned CSX2430, and this dark colored car does also look like CSX2009 as well; but if it truly is CSX2009, then that would have to date the photo to the '63/'64 time period, not '66.