I bought a transfer case, but it has the 1310 yokes not the cv yokes. Currently I am running just a u-joint rear with 1310 yoke on my D20, but I am swapping in a 4r70w and I think the driveshaft is going to get short enough that I need a cv. So I definately need a 1310 cv for the front and I could run anything I want on the rear since I am going to have to change the driveshaft anyway.