Your friend needs to check to see if the car is in the Charger 500 registry and if not he should add it to the site. This will help confirm if the 392 production numbers are legitimate or if the currently discussed number of 548 is more accurate. The story of the 392 production numbers were accepted because when Nascar went to verify that 500 were built supposedly only 392 were built by this time,so the story goes that the ones already counted were driven around to the back of the line to be counted a second time. This story may very well be true, but there is no information if the rest of the 500 cars were ever produced. Supposedly the head of Fords racing division questioned the count,and was told several are available at local dealerships if you want to buy one,Dodge had met their obligation to produce 500 examples in Nascars eyes.