[SpeakerToAnimals]

The stock bodywork and modified original engine meant technology developed for the track was getting into the cars in the showroom. Like the fastback roof of my Torino and the Cobra-Jet 429 engine with it's big ports.

It is no longer stock car racing. Without the connection to the cars Americans drive every day the magic is gone.

[ZirconEncrustedTweezers]

The 429 had to be homologated for NASCAR in a production vehicle (which is how we got the Mustang Boss 429), but you are correct in stating that the technology developed on track could be purchased at your local dealership.

I’ve yet to find a Fusion with a V8 engine, much less one that is rear-drive.