What's wrong with Stock?

[Rory McNeil]

I`m curious as to why the factorys didn`t promote their actual production line cars, like the Mustang GT/Boss 302/Shelby, Chevys SS/Z28/ZL1 Camaros, and the various MoPar Challengers.
Factory HP ratings too high?
Not enough exotic/trick factory pieces?
Lack of OE offered Powerglides and Ford 9" rearends?
Factory shipping weights too high?
I always thought much of the challenge of Stock was making the best of the obstacles the compromised factory parts that you had to work with.
It would appear that the "Big 3" have avoided any such nusiances, by creating a bunch of purpose built, max effort race cars, using a blank sheet of paper to eliminate having to deal with any pesky OE production compromise designs. And then by making minor spec tweaks each year, they assure themselves of always having another under rated combination in the wings. Nice. Kinda like a NFL Pro football team beating up on a high school team. . And having somebody come on here to talk about how much time and effort hey have spent to make their new 2014 factory race car competetive against a guy who has been thrashing on his "nostalgia" combo for 20,30, or more years, in a slap in the face.