Combo u-joint vs 7260 solid

So I have a 742 Sure-Grip with 3.23s and a driveshaft with new spicer 7260 u-joints, which are solid.
Original bb car with a 4 speed.

Going to swap in a 742 Sure-Grip with 3.91s with a 7290 yoke.

Combo u-joint would make it easy, but it's greasable, aka not solid, and I can't locate a solid one.

Am I better off swapping the pinion yoke and keeping the solid u-joint, or using the combo?

If swapping the yoke, it's not rocket science right, as long as both have the same spline, yes?