C4 Help

The numbers you gave are PART numbers of the part, like 7a01c, it should read 7a039 this is the part number of all C4 and C6 tail shafts.
You need to look for a metal tag bolted to the drivers side servo for the correct number. there are a few different models like the small 24 spine input shaft and the larger 26 spine. there is also different valve bodies for each year. The number your looking for starts with a "P". An example would be a 65 mustang with a 289 would be PCW-H or PCW-J