Okay guys I just searched this thread out again and I still have the same question,maybe I need to search (goggle) for the answers or I need alot more information to giv so that I get a more informed answer,but I am really a novice when it comes to the rearend of vehicles. One reason I am asking is that a modified car up my street seems to have a locked diff as whenever he turns out of our street one can hear the inside rear scuffs the tyre as if it is trying to drive the car around the corner also. The diff in my bucket only drives or skids only one wheel and I wonder if a LSD diff would be a better advantage to me. I have never drag raced my car on a strip although it is something I would like to try,but the car is more for street use.