Part Number Location

You are correct, the part number on the ends of a Driveshaft/Driveline are the universal/yoke ends (Didn't know the correct name at this moment). But in regards to your second portion of your message, the drive shaft from the GTS has the large ends on both [maybe because of Big Block??], I can't say in the years I have played with mopars I have ever seen two different Universay joints on the same drive line. But I have ran into odder situations. THANKS