bburns31: Thanks for sharing. Marks are pretty typical. The tube numbering is found on every third driveline made (one tube = three drivelines for a single driveline application.
Question - The two dirvelines that you show close up with the tube number on them are from different drivelines correct? The untouched rusty one does not have anywhere as much yellow paint remaining to result in the "after" picture. Also the one that is clear to read is that from another car? Looks to be a much earlier driveline than one would expect for 6F07C354269
Respectfully - Got to ask
Is there a source for stripe colors for particular builds?
Depends on the car and how its equipped.
For some we have documentation (in print), others we have original examples and for others not enough IMHO to make assumptions from. Good thing is that they are easy (in some cases easier) to add later to a car if not certain and you don't want to be responsible for leading others down the wrong path by applying questionable markings
A fair amount of driveline markings are available in other threads
Another 66 C code automatic thread focusing on markings
https://www.concoursmustang.com/forum/index.php?topic=13723.msg85034#msg85034