Hey there,
Most of the time people find a 3 letter-1 number code (ex SOD4) on the fenderwell side of the computer, can be hard to see without a mirror and light, even then you might be reading backwords, so its not always easy to get. However, the one number you gave "F7TF-TB" matches up with a
PCM code on a calibration list. The
PCM code would be TDE1 with that number you gave, which would make sense if you have a '96 auto with a dealer
PCM recalibration. Your actual
PCM code on your computer might not be TDE1, but it would probably be in the same hardware family for being compatable with a Pheonix chip. I would say you could
probably order your chip with the F7TF-TB number, but if you could find the
PCM code in addition that you could also have handy when you order you would be golden! Hope this isn't too confusing!