Looks like I need a 7260/7290 combo. I don't have an old joint to compare sizes of caps. I just have the information presented above. I'm thinking the 7260 side for the 741 case will use inside snaps and the 7290 will use outside snaps seeing I have grooves in the driveshaft ears.

I was just confused because all the tech archives and older posts point to a 67 GTX having 1300 series u-joints, not the 7290. Thanks for the info and charts and posts above