Can you tell what rearend that is by the picture Cudaspaz? I tried to figure that out last night, but it is a little to dirty for me to tell. Could be either the D35 or the C8.25 if I remember right from what I looked up.
You can determine your axle type,if it is an 8.25 it will have 3" axle tubes and the carrier housing will be squared off on the bottom,not the diff cover itself,but the carrier housing.
From the pics it appears to be the Dana.