People implying that this has been concocted.

Usually the main reason VIN's and fender tags are changed for financial gain.

Don't mistake rare for desirable. It's not like a 426 street wedge is something that is sought after.

'63 Dodge 330
11.19 @ 121 mph
Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs.
10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.