If you don't know those variations going in or they are not apparent on the car, researching the details takes time and money and add little overall value. Certain details do become cost prohibitive if you are trying to make a profit and don't make sense on a driver.

Soon - I'm tackling this rusty 69 charger project #'s 383 H code 4 speed console T7 ext. T5 int. 2 buildsheets fender tag, 1 owner car.
My intention is to restore to driver quality.
I was thinking of making it an R/T clone.
Now after all, I'm going to follow the buildsheet and resist my personal preferences.