Does not prove that Richard Petty did not order the car under discussion. The car was built to a sales order number, it had to be someone’s order, it may have been The King’s. Although I think it was Elvis’s.
I'm simply stating the facts, not trying to speculate on the potential prior ownership.
The original post and title make reference to a Low Serial Number, not even close.
Makes reference to a March 66 date I don't see a three digit number ending in starting with 3 so no idea where that came from.
Makes reference to a 280000 range sequence, don't see anything close to that (taking in account the 100001 offset)