What PARTS did Hurst and Chrysler put in the Super Stock Barracuda & Dart not in other factory cars

You're right, of course. Don't know what I was thinking. But it still hadn't been mentioned. Then again, EVERY single time I take my 69 340 Barracuda to a show or cruise night, somebody tells me their uncle used to have one, but his had a hemi.
I get the same thing with my '65 Barracuda. "Yeah, OK Pops...you remember your kids names?"