I didn't see the Cars personally. The incidents were relayed by one of the people actually involved. While having Lunch today I brought this topic up to a Gentleman who works for me. Tom B. is a retiree from Chrysler and so was his Father. Both held executive ranks within the Company. He said in 1966, a Chief for an Atlanta Fire station was chosen to head security at the Daytona 500 Race. Tom rode with the Fire Chief on the way to the Race in a new Dodge Truck that was to take part in the Parade festivities. While en-route to the Raceway, the Engine in the Truck developed a Rod knock. They called Tom's Father (who was head of the Zone) to find out what they could do to fix the problem. Tom's Dad contacted a local Dealership in the area and instructed them to pick a vehicle from their stock, pull the Engine and swap it with the Truck's damaged one. Tom and the Fire Chief stayed at a Motel overnight while the Dealership pulled a 318 Engine from a brand new Car and swapped it with the one in their Truck. The Truck didn't even have 300 miles on it at the time and now had a non-numbers matching Block sitting in its Engine Bay. The new Car at the Dealership had to have a replacement block installed in place of its original one.

Think of the controversy this would cause if someone were to find the evidence of what had taken place during that ordeal. Things like this were never written into Factory protocol but occurred quite often.