Hey topcatcuda,
Cool analogy, I call this "carcheology".
It is like detective work in a lot of ways, following leads, keeping good files, cross referencing data and on and on. I also takes lots of helpful people, there are a lot of great people in the Mopar world and I am glad to know quite a few of them. Word of mouth helps more than you can imagine.
Redline,
If you need help with the missing codes on that tag, just let me know. I will start a file on your R/T SE too, please PM me with your full name, phone number and mailing address so I have more than one way to contact you if another broadcast sheet shows up for your car.
Thanks,
Barry