Spicer 1330 is nearly the same as the detroit 7290. Spicer 1310 would be like the detroit 7260.
Detroit like Saginaw were companies spun off by Dodge and GM and made slight changes to what are really Spicer joints. All they did were use inside clips and add a 16th/32nd to cap diameters.
Then AAM bought both of them and plays the same way.