Wasn't Ronnie Sox racing a 64 Mercury for the 64 season, and if he won a brand new Hemi car from Chrysler (that didn't exist either yet) at the Winter-Nationals, maybe he received it later on, along with a new contact to drive for them in 65. So instead of him taking the Hemi Dodge that he supposedly won, he took a Hemi Plymouth and switched teams, (yeah I know it's a long shot, but it's possible).

And as far as those 10 extra white hardtops you're all talking about, are you 100% sure they were all Hemi cars, or just regular Polara 440 hardtops? You do know that Hurst had several promotional giveaways over the years right, and I can't see Chrysler handing out "Race Hemi cars" either to winner's from various races, there would have been some kind of print about that! Hell I remember seeing the ad "Win a new Street-Hemi motor" in the 66 magazine's, but I can't imagine them giving away complete running 426 Race Hemi cars?