Holy Sheep Sh!t. Sooooo much mis information.
For the rear driveshaft...Your U-joints are most likely 1410 series, they could possibly be 1480. but chances are they are 1410.
For your front driveshaft they are mechanics 3R or Saginaw S44, which is the same thing, just different names used by different manufacturers.
Do not under any circumstance buy U-joints from Napa or anyplace that is reboxing precision brand U-joints. They are the bottom of the barrel and loose when they are new.
01 GMC 2500hd ecsb Dmax/Alli. 4" exhaust to 5" single stack,EDGE Insight CTS, EFI Live Moonshine tuned, Suncoast stage IV, Complete Kryptonite front end with PISK , 305/55/R20 Cooper Zeon's on Rockstars. Eaton E-locker. So cal stage I heads, and a little bit of laughing gas.
07 LMM LTZ CCSB. S475 over stock compounds, 40% over dipper sticks, Suncoast tranny by Freedom Diesel, Air Dog, ATP tuned.