8.8 swap 7260 adapter u joint to ???

If I was to change from a 8-3/4 rear to a 8.8, is it just a U-joint change? No difference in driveshaft length, right?
Contemplating.
Tires are very close to quarter already, & wheels I'm interested in have 1/2" more offset, 8.8 is a tad more than 1" narrower.
better gearing, limited slip, & disc brakes add to the appeal.