Just read it and was going to post it here when i saw you beat me to it.
You gotta keep in mind the tailpipe on an early A was only 1 3/4" factory, I can believe that from a header and free exh on that ride.Just read it and was going to post it here when i saw you beat me to it.
They talked the slant six down to much in the begging. Just seems like product placement and way too much over exaggeration. 22hp from changing a exhaust on a stock 50+ year old slant six, really, seems like a bit much. And by just changing to electronic ignition it can also performe just as well as modern cars I dont think so.
Oh boy, someone made them an out of the box HEI conversion that has been popular among Slant guys for over 15 years and they put a bigger exhaust on it. Much wow.
And why even bother with a dummy ballast resistor? That just seems like asking for another thing to go wrong.
They need to do a little internet searching. There is a youtube of a guy running 9.09 sec 1/4-mile w/ a slant, albeit after adding a turbo-charger. Charrlie_S here recently posted running in the 12's w/ natural aspiration, and I recall he runs a 170 cu in slant. That speed can match the fastest factory Camaro, Mustang, even Hellcat & Demon.