Beer is riding on an argument.

Yes, but they were built as 383 GTS's at Chrysler then transported over to Hurst-Campbell for the 440 conversion, so they were still factory cars...

Just found this to support your response.

I learn something new every day on this site.

Cheers!!



"....Dodge shipped 383-spec Darts (minus powertrain) along with factory-prepped 440 engines to Hurst-Campbell, Inc., a Michigan aftermarket company. Hurst-Campbell did the conversion, Dodge reps inspected it, and the cars were forwarded to Grand Spaulding Auto Sales in Chicago, a performance-oriented Dodge dealer. These cars got vehicle identification numbers but were not covered by the factory warranty.


Note that this 1968 Dart GTS 440 retains "383" badges denoting the smaller engine. The element of surprise was a muscle car staple.
With even more weight in front and no power steering (it wouldn't fit), 440 Darts were good for little but all-out straight-line attacks. So irresistible was the setup that a thief stole Car and Driver's brand-new, bright blue 440 Dart test car from its New York parking space.

Documenting the heist in its October 1969 issue, the magazine said the Dart soon surfaced "at a local street racing highway and cleaned up. The car, camouflaged in light gray primer...had put down a brace of Corvettes that had gained some local renown."

The thief was eventually caught red-handed at New York National Speedway, where the Dart was embarrassing all rivals. Appropriately enough, it was running in the dragway's "Hot Car" class...."