So some family are coming over this weekend so I figured what a great time to get some work done on my truck. I went to pepboys to load up my cart and couldn't figure out which U joints I would need. There was a couple different cup sizes on there computer and neither of us (pepboys employee) knew which ones so I left without em. Does anybody know exactly which u joints I need?

 

Also if anybody could link me to the right spicer u joints that would be awesome, have a 2001 lariat 4x4 4r70w tranny 9.75 rear end 139" wheel base

 

I find it odd that they cant find which u joints you need. I went to autozone or oreillys and they looked it up and grabbed em for me.

 

Idk it was some kid and I didn't feel like sitting around there all day, I now know which size I need but I would like to find some spicer u joints online if possible and order them

 

I went with the brute force ones from Discount Advance. There non greasable so there stronger and normally I always use Spicer from my Jeep days but I must say these are built pretty well and no complaints so far 3k miles later.