Here is some info that I found. I do not think these are for our trucks although my buddy has written on a piece of paper attached to the box that says 70 C-10 disc and 71 C-10 all (rear studs) Here is what I found.
http://www.dormanproducts.com/gsearc...Wheel%2520Stud I guess I need to take off one of my wheel and check these to see if they are the same.
PT