Cap OD for a 7290 Yoke is 1 1/8 inches, for the 1350 is 1 3/16 inches. on a 12.5 sec 3600 lbs car is the step up worth it?

I have been running a rear conversion u-joint old smaller to a 7290. 7290 on the center section. Been nervous about it for a while. I just keep it greased well.. that's the big reason to change or update the drive shaft.
I'm running 12.40s with a front 7260 and a rear 7260/7290 combination yeah It's always on my mind.