..... You know whats REALLY hard to do, and very, very unique? Factory Stock.
The factory built hundreds of thousands of "Factory Stock" trucks. Therefore, by definition, there is nothing unique about "Factory Stock", it is exactly the opposite of "unique".
You are both right - it just depends what you are referring to.
There obviously was nothing unique about factory stock coming off the assembly line. However, finding factory stock (original parts) 50+ year old trucks today would most likely be unique.
Attempting to simply restore/maintain one of these old trucks with factory style/spec parts is a challenge. These types of restored trucks are close to unique. This is what I usually try to do, but I break my own "rules" without concern about the opinions of others (and without preaching to others about what/why I do what I do with my trucks).
It is, however, enjoyable to pick-apart for-sale ads for old trucks that say things like "bone stock" "all original" "one of 300 hundred made" "last known original example".
Build a hot-rod, build a "restoration", build a "driver" - enjoy the build and enjoy the drive.