Yesterday was a lenghty discussion on gear ratios and how to determine what you have. My glove box on my newly purchased 87 has the GU6 and G80 indicating 3.42 rear end and limited slip diffs respectively. Now, I plan to pull the covers and inspect. My questions are: Does the G80 package put limited slip in the front diff as well? How do you visually inspect a limited slip (can you visually inspect the clutches or measure them)? I plan to put 32" or 33" BFG MTs on this non lifted truck truck, will I be unhappy with the 3.42 ratio? This K5 is used on the highway, then in the mud. Thanks.