I missed this story at the end of last year, but luckily it was mentioned on the new series of 'The Grand Tour'. Here's a '68 Dodge Charger fitted with the 426 Hemi Hellephant crate motor similar to the one found in the Hellcat. As well as the 1,000-hp engine, there's a six-speed manual transmission, six-piston Brembo brakes and Hellcat wheels measuring 20 inches in front and 21 inches in back. More info here.
There are several videos about the car, including this one: