There was a subtext of performance underneath the Rivvi from the gitgo - in fact, some were raced in sportsman / late model classes in the day at Riverside.
It sure is unique, and while I'm not a superfan of the drag racing conventions like the cowl hood, it's fun, and probably saved one from the crusher. I give double points for a nailhead or Buick-based powertrain under the hood.
Still, perfection on earth is a '65 GS in black on the factory wheels, with the proper stance and 3-band whitewalls.
But that's just me...