I pressed out the old ujoints and put in the closest thing i could find that matched which was the 1310 style joints. The caps on these are a big longer but when assembled cap to cap is the same length as the old ones so that should matter. I pressed in my new ones and things seam to be alittle tight. I only pressed one joint into one of the ends and havnt assembled the hole shaft yet because i think there might be somthing wrong. How hard should it bee to move the joint once i put these in, i have to push pretty hard. The old ones moved very freely but then again they had been worked for 10 years.
Also i'm not sure how else you'd get these things in but i just wanted to make sure i'm doing this right, i had to pull the caps off the ujoint and put the joint into the shaft and then take the caps and press them in from the outside.
http://reitanfamily.com/gallery/d/11328-1/joints.JPG