Randy Jaffe's BRE isn't the original, but he has the original powertrain, two of the surviving wheels, switchgear, gauges, and many of the other bits and pieces from the original car.
Dan Parkinson bought the 46 from BRE and raced it for a while until a front steering/suspension (I can't remember what exactly) failed and put the car into the wall on its left side. Dan got a 280Z from Nissan and transferred the parts to that car. Randy bought the Parkinson car a few year back to get the parts. Some of the parts just sit on display, like the powertrain. Other parts have succumbed to time, like the megaphones. (I was helping the team scrounge for parts when the megaphones gave out at the 2018 Mitty.)
The car has been recaptured in incredible detail, down to having hand-painted numbers and logos. To see it in person is to travel in a time machine back to the 70s. John Morton even gave Randy the VIN plate from the original car.