85' rear driveshaft, S44 or 1310??

[85mudblazin]

I want to get a conversion u-joint for a my old stock driveshaft to use as a spare and I dont know if the rear is a S44 or a 1310, any help??
Thanks
-Chris

 

[Hossbaby50]

s44

 

[85mudblazin]

thank ya

 

[big83chevy4x4]

most likely it has S44, but the easy way to tell is if oyu have internal clips on the ujoints its S44, external clips is 1310.