I just replaced mine. autozone duralast gold lifetime warranty. part number 1-0153DG 12.00 ea
They list two, don't know why, but I mine was 3.219 outside lockup. I got the larger one and had to exchange them once I figured that I couldn't fit them betweem the yoke.
There are quite a few video's and how to's on replacing the u-joints using sockets and a big hammer. Drive shaft comes out with the remove of 4 bolts that connect it to the differential. slips off the transfer case output shaft. Once I got the drive shaft out, the job went quickly, less 2 hours in my basement replacing both of them. re-install took all of 15 minutes
Supplies:
Big hammer and an assortment of sockets.
I found a sparkplug socket worked well and since I have a diesel, I wasn't worried about destroying it.
Two u-joints
penetrating oil
Grease for the slip yoke
A wide zip tie to reseal dust boot
blue loctite for the bolts
Block your tires so it doesn't roll over you when you take the drive shaft out. !!!!!!

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2005 CRD "
Ol' Blue"
Red Ryder carbine-action, two hundred shot range model air rifle with a compass in the stock and this thing which tells time.
My build page- RL Komodo Rear and TJM Front Bumper, armored, lifted, JBA Steel D30, 4.10s and ARB air lockers.