1966 14x6.5" steel wheel, any insight from vintage racers?

I asked about this wheel in another section & it may very well be a Chrysler offered aftermarket part for racers, but it would be nice to know for sure!

Just so I do not have to start all over, thread with details & photos here on Moparts at https://board.moparts.org/ubbthreads/ubbt...tml#Post2558523

Thanks!