my rear diff went out..... more i think is whatever the front part of the rear diff is that broke. I raised the back end of my car and release the e-brake. i spun the rear tire and they both moved since i have a 1.5 cusco diff. but i notice that the drive shaft didn't move. then i tried to spin the drive shaft by my hand and it moved but the wheels didn't move.

well that's the story i have,,, the problem is i have another diff. how can you tell if it is a 3.90 or 4.11? that diff is the same one i have when i had the Dog Mission. I bought a 3.90 diff with the 1.5 cusco LSD so i know that i have a 3.90 diff. By the way i also have a 6spd installed and i need a 3.90 diff with the 6spd. Someone on this site told me to open the casing and check inside you will find out what it is... i found numbers but i don't know what it meant. here a picture.