I've looked up the VIN number, and I've gone throught the identifiers, and my car is supposed to have an open 3.08, and though I could be mistaken, I have always thought that it would be a one wheel wonder with that gear set. But I was pulling a old 60's Chevelle through the mud the other night, and my right wheel spun for a second or so, and then the left side kicked in. I've always thought of that as a limited slip type of function. Do I have my definitions wrong, or should I look more closely at the pumpkin itself and see if it's been changed out? Thanks!