For the C7ZA-AE rear springs did you happen to try the search feature? There is a 4 page 48 post thread that you might consider
Just used the words "67 rear spring markings"
We don't know all of the markings (haven't been confirmed) so some of them are a maybe. You can always leave them off right now since they are easy to add later
http://www.concoursmustang.com/forum/index.php?topic=17385.0 Based on an early 67 GT Fastback, automatic, PS and no AC buildsheet it shows
- 1 Yellow and 1 Tan on the front springs (brushed out of the car sitting on its side or upside down)
- 1 Orange and 1 White stripes on the rear end of the short leaf
Now here is where the confusion begins. The chart you will find in the thread above shows the C7ZA-AC as being confirmed from a 67 390 Fastback buildsheet from most likely the NJ plant with a projected build date of 12/2/66 about 2 weeks prior to you example. Not sure how the confirmation was made unless Paperback Writer, the OP, saw the car/springs that went with the buildsheet. His chart shows a silver and green stripe.
Buildsheet info posted above is from a 67 390 Fastback, (GT, Auto, PS, Nno AC) buildsheet from NJ with a projected build date 06A. A couple of weeks after your cars projected date.
At this point, assuming that the AC and markings were confirmed from a set of original springs that is the best choice now IMHO. This is one of the reasons I prefer to match spring identification rather than the buildsheets when it comes to only these parts. Seen to many mismatches
Paint mark info isn't always easy to come by and many of us have been studying it for years. Consider that if you put on an incorrect mark it will likely be copied dozens of time from others assuming that you knew what the mark should be and will rely on you that you were certain it was.
