The yoke should be a 32 spline. In other words, when you take it off, the shaft it slides on should have 32 ridges. Sometimes changes are made on transfer cases for various reasons, but this is fairly standard.
If you are concerned, just take off that big nut in the center, slide the yoke off and count the splines.
However, they make different size U-joints and you have to have the right yoke for the joint.
Different makers use different numbers, but Spicer is so old, and so common that most folks just refer to the sized by their Spicer numbers.
1310,1330,1350,1410, etc. The bigger the number the bigger and stronger the joint.
There are two things to consider here. First, of course, we need to make sure which joint you have so you get the right yoke.
But, there is one more thing to consider here. You are replacing the yoke on the T-case, the cross (u-joint), and the yoke on the drive shaft is iffy.
If the splines on the drive shaft are not too worn, you can get a new one for it and that gives you the option of upgrading that whole joint.
If you have a 1330, its not too shabby, but a 1350 would be better.
We need to know which joint you have now for sure, and for that you need to measure what you have.
I'm sure that there is a chart somewhere here, but if it will upload, this one will give you the sizes, maximize it and the numbers should line up.
If it does not work, or you can't read it, let me know, and I will just type them out.
Hopefully someone here has looked at the shaft picture and can recommend what to do.
Also, a 1330 joint is fine for what you have now. But we need to make sure that is what you have.
J.
