Question. You say for ease of reference. If you never had a 72 dated build sheet. Would you even know there was a difference ? Ease of reference ? In what way ? I just don't get it I guess. The info is the same and unless I have 2 sheets side by side and am trying to decode both sheets at the same time without having to move one slightly occasionally what is the difference really ?
I guess somebody might have a pristine, blank 72 broadcast sheet out there, but that might take a while to show up.
I have no problem on my 72 using a blank 70 sheet to be able to read my build options.
As far as why there aren't any 72 and up sheets out there ? Until relatively recently there was not enough of a market on pre 72 Mopar's to justify doing it. It is just that now, most 70-71 Mopars that are "valuable" Big block, multi-carb, Hemi etc... are already in collections or are so expensive that some one wanting to have a 'Cuda or Challenger has to settle for the less desirable 72-74 year models to afford one. Remember that these cars are now at least 45 + years old and a lot of that info is ancient history and no one was saving it until recently.
Yes, I would know the difference. My build sheet isn't the only source of reference for a 72-73 build sheet.
As you noted, between the two the info is not all the same, and things are in different places. That's was ok for you, not for me.
Moparcarguy had some good ideas.
Who ever created those build sheet downloads used a word processing program from scratch.
And they did an amazing job.
I think modifying that is the best approach.
Either way I'll need help from someone better with comps than me.