Hey All! I just picked up a 12 bolt locker from an 80 blazer. I was told that it would fit a 60's model rear end housing. So any one have any experience with this? This is a really nice locker and I would like to use it if I can identify that it will fit correctly. I have asked several others and I get a lot of warm and fuzzies but not a definite answer Also any idea how to identify if it is a 2, 3 or 4 series carrier the number stamped on the case is G271C